IntegerClass.cpp

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/*----------------------------------------------------------------------------*/
/*                                                                            */
/* Copyright (c) 1995, 2004 IBM Corporation. All rights reserved.             */
/* Copyright (c) 2005-2009 Rexx Language Association. All rights reserved.    */
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/*----------------------------------------------------------------------------*/
/******************************************************************************/
/* REXX Kernel                                           IntegerClass.c       */
/*                                                                            */
/* Primitive Integer Class                                                    */
/*                                                                            */
/******************************************************************************/
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include "RexxCore.h"
#include "StringClass.hpp"
#include "ArrayClass.hpp"
#include "RexxActivation.hpp"
#include "RexxActivity.hpp"
#include "Numerics.hpp"
#include "RexxCompoundTail.hpp"
#include "DirectoryClass.hpp"
 
 
 
// singleton class instance
RexxIntegerClass *RexxInteger::classInstance = OREF_NULL;
 
RexxInteger *RexxInteger::falseObject = OREF_NULL;
RexxInteger *RexxInteger::trueObject = OREF_NULL;
RexxInteger *RexxInteger::nullPointer = OREF_NULL;
 
RexxInteger *RexxInteger::integerZero = OREF_NULL;
RexxInteger *RexxInteger::integerOne = OREF_NULL;
RexxInteger *RexxInteger::integerTwo = OREF_NULL;
RexxInteger *RexxInteger::integerThree = OREF_NULL;
RexxInteger *RexxInteger::integerFour = OREF_NULL;
RexxInteger *RexxInteger::integerFive = OREF_NULL;
RexxInteger *RexxInteger::integerSix = OREF_NULL;
RexxInteger *RexxInteger::integerSeven = OREF_NULL;
RexxInteger *RexxInteger::integerEight = OREF_NULL;
RexxInteger *RexxInteger::integerNine = OREF_NULL;
RexxInteger *RexxInteger::integerMinusOne = OREF_NULL;
                                       /* define an operator forwarding     */
                                       /* method                            */
 
#define string_forwarder_cpp(method)\
RexxObject *RexxInteger::##method(RexxObject *operand)\
 {\
     return (RexxObject *)this->string()->method(operand);\
 }
 
 
/**
 * Get the primitive hash value of this String object.
 *
 * @return The calculated string hash for the string.
 */
HashCode RexxInteger::getHashValue()
{
    return stringValue()->getHashValue();
}
 
 
void RexxInteger::live(size_t liveMark)
/******************************************************************************/
/* Function:  Normal garbage collection live marking                          */
/******************************************************************************/
{
  memory_mark(this->objectVariables);
  memory_mark(this->stringrep);
}
 
void RexxInteger::liveGeneral(int reason)
/******************************************************************************/
/* Function:  Generalized object marking                                      */
/******************************************************************************/
{
  memory_mark_general(this->objectVariables);
  memory_mark_general(this->stringrep);
}
 
void RexxInteger::flatten(RexxEnvelope *envelope)
/******************************************************************************/
/* Function:  Flatten an object                                               */
/******************************************************************************/
{
  setUpFlatten(RexxInteger)
 
   flatten_reference(newThis->objectVariables, envelope);
   flatten_reference(newThis->stringrep, envelope);
 
  cleanUpFlatten
}
 
RexxString *RexxInteger::makeString()
/******************************************************************************/
/* Function:  Handle a REQUEST('STRING') request for a REXX integer object    */
/******************************************************************************/
{
  return this->stringValue();          /* return the string value           */
}
 
 
/**
 * Override for the default object makearray method.
 *
 * @return The results of our string representation's makearray.
 */
RexxArray *RexxInteger::makeArray()
{
  return this->stringValue()->makeArray();     // have the string value handle this
}
 
RexxInteger *RexxInteger::hasMethod(RexxString *methodName)
/******************************************************************************/
/* Function:  Handle a HASMETHOD request for an integer                       */
/******************************************************************************/
{
                                       /* return the string value's answer  */
  return this->stringValue()->hasMethod(methodName);
}
 
RexxString *RexxInteger::primitiveMakeString()
/******************************************************************************/
/* Function:  Handle a REQUEST('STRING') request for a REXX integer object    */
/******************************************************************************/
{
    if (this->stringrep != OREF_NULL)    /* have a string already?            */
    {
        return this->stringrep;            /* return it directly                */
    }
    char        stringBuffer[32];        /* integer formatting buffer         */
                                           /* convert value into string         */
    Numerics::formatWholeNumber(this->value, stringBuffer);
 
    /* return as a string                */
    RexxString *string = new_string(stringBuffer, strlen(stringBuffer));
    /* cache this away for later         */
    OrefSet(this, this->stringrep, string);
    this->setHasReferences();            // now have references that need marking
    return string;                       /* return the new string             */
}
 
RexxString *RexxInteger::stringValue()
/******************************************************************************/
/* Function:  Return the string value for an integer                          */
/******************************************************************************/
{
    if (this->stringrep != OREF_NULL)    /* have a string already?            */
    {
        return this->stringrep;            /* return it directly                */
    }
 
    char        stringBuffer[32];        /* integer formatting buffer         */
                                           /* convert value into string         */
    Numerics::formatWholeNumber(this->value, stringBuffer);
    /* return as a string                */
    RexxString *string = new_string(stringBuffer, strlen(stringBuffer));
    /* cache this away for later         */
    OrefSet(this, this->stringrep, string);
    this->setHasReferences();            /* we now have references            */
    return string;                       /* return the new string             */
}
 
void RexxInteger::copyIntoTail(RexxCompoundTail *tail)
/******************************************************************************/
/* Function:  Copy the value of an integer into a compound variable name      */
/******************************************************************************/
{
    if (this->stringrep != OREF_NULL)  /* have a string already?            */
    {
        /* copying directly from an existing string rep is faster */
        /* than formatting a new value and copying. */
        tail->append(stringrep->getStringData(), stringrep->getLength());
        return;
    }
    char        stringBuffer[32];        /* integer formatting buffer         */
    /* convert value into string         */
    Numerics::formatWholeNumber(this->value, stringBuffer);
    /* append this to the buffer         */
    tail->append(stringBuffer, strlen(stringBuffer));
}
 
 
RexxNumberString *RexxInteger::numberString()
/******************************************************************************/
/* Function:  Convert an integer into a numberstring value                    */
/******************************************************************************/
{
    if (this->stringrep != OREF_NULL)    /* have a cached string value?       */
    {
        /* use its numberstring value        */
        return this->stringrep->numberString();
    }
    else                                 /* create a new numberstring         */
    {
        return(RexxNumberString *)new_numberstringFromWholenumber((wholenumber_t)this->value);
    }
}
 
 
/**
 * Convert an integer object into a double value.
 *
 * @param value  The returned value.
 *
 * @return true if this converted ok, false for any errors.  This always
 *         returns true for the Integer class.
 */
bool RexxInteger::doubleValue(double &result)
{
    // just let the compiler convert
    result = (double)this->wholeNumber();
    return true;
}
 
 
/**
 * Convert an integer object into a whole number value using the
 * default digits setting.
 *
 * @param result The returned result.
 *
 * @return true if the number converts ok under the current digits setting.  false
 *         for any conversion errors.
 */
bool RexxInteger::numberValue(wholenumber_t &result)
{
                                       /* is the long value expressable as a*/
                                       /*  whole number in REXX term.       */
    if (Numerics::abs(value) > Numerics::MAX_WHOLENUMBER)
    {
        return false;                    /* nope, not a valid long.           */
    }
    result = value;                      // return the value
    return true;                         // this was convertable
}
 
 
/**
 * Convert an integer object into a whole number value using the
 * current digits setting.
 *
 * @param result The returned result.
 * @param digits The digits setting to apply to the conversion.
 *
 * @return true if the number converts ok under the current digits setting.  false
 *         for any conversion errors.
 */
bool RexxInteger::numberValue(wholenumber_t &result, size_t digits)
{
                                       /* is the long value expressable as a*/
                                       /*  whole number in REXX term.       */
    if (digits < Numerics::DEFAULT_DIGITS && Numerics::abs(value) >= Numerics::validMaxWhole[digits - 1])
    {
        return false;                      /* nope, not a valid long.           */
    }
    result = value;                     // return the value
    return true;                         // this was convertable
}
 
 
/**
 * Convert an integer object into an unsigned whole number value
 * using the default digits setting.
 *
 * @param result The returned result.
 *
 * @return true if the number converts ok under the current digits setting.  false
 *         for any conversion errors.
 */
bool RexxInteger::unsignedNumberValue(stringsize_t &result)
{
    // this must be non-negative and not out of range
    if (value < 0  || value > Numerics::MAX_WHOLENUMBER)
    {
        return false;
    }
    result = wholeNumber();              // return the value
    return true;                         // this was convertable
}
 
 
/**
 * Convert an integer object into an unsigned whole number value
 * using the current digits setting.
 *
 * @param result The returned result.
 * @param digits The digits setting to apply to the conversion.
 *
 * @return true if the number converts ok under the current digits setting.  false
 *         for any conversion errors.
 */
bool RexxInteger::unsignedNumberValue(stringsize_t &result, size_t digits)
{
                                       /* is the long value expressable as a*/
                                       /*  whole number in REXX term.       */
    if (value < 0 || (digits < Numerics::DEFAULT_DIGITS && value >= Numerics::validMaxWhole[digits - 1]))
    {
        return false;                      /* nope, not a valid long.           */
    }
    result = wholeNumber();              // return the value
    return true;                         // this was convertable
}
 
RexxInteger *RexxInteger::integerValue(
    size_t digits)                     /* required precision (ignored)      */
/******************************************************************************/
/* Function:  Convert an integer to an integer (real easy!)                   */
/******************************************************************************/
{
  return this;                         /* just return directly              */
}
 
void RexxInteger::setString(
    RexxString *string )               /* new string value                  */
/******************************************************************************/
/* Function:  Add a string value to the string look-a-side.                   */
/******************************************************************************/
{
                                       /* set the strign                    */
   OrefSet(this, this->stringrep, string);
   this->setHasReferences();           /* we now have references            */
}
 
bool RexxInteger::truthValue(
    int   errorcode )                  /* error to raise if not good        */
/******************************************************************************/
/* Function:  Determine the truth value of an integer object                  */
/******************************************************************************/
{
    if (this->value == 0)                /* have a zero?                      */
    {
        return false;                      /* this is false                     */
    }
    else if (this->value != 1)           /* how about a one?                  */
    {
        reportException(errorcode, this);/* report the error                  */
    }
    return true;                         /* this is true                      */
}
 
 
/**
 * Convert an object to a logical value without raising an
 * error.
 *
 * @param result The converted value.
 *
 * @return true if this converted ok, false for an invalid logical.
 */
bool RexxInteger::logicalValue(logical_t &result)
{
    if (this->value == 0)                /* have a zero?                      */
    {
        result = false;                  // this is false and the conversion worked
        return true;
    }
    else if (this->value == 1)           /* how about a one?                  */
    {
        result = true;                   // this is true and the conversion worked
        return true;
    }
    else
    {
        return false;                    // bad conversion
    }
}
 
/******************************************************************************/
/* Function:   Macro to forward a method against the numberstring value of    */
/*             an integer object.                                             */
/******************************************************************************/
 
#define integer_forward(s,m,o) ((s)->numberString()->m(o))
 
RexxObject *RexxInteger::unknown(
    RexxString *msgname,               /* unknown message name              */
    RexxArray *arguments,              /* arguments to the unknown message  */
    RexxDirectory *named_arguments)
/******************************************************************************/
/* Function:  Intercept unknown messages to an integer object and reissue     */
/*            them against the string value.                                  */
/******************************************************************************/
{
                                       /* just reissue this                 */
    return this->stringValue()->sendMessage(msgname, arguments, named_arguments);
}
 
 
/**
 * Wrapper around the compareTo() method that does string sort
 * comparisons.
 *
 * @param other  The other comparison object
 *
 * @return -1, 0, 1 depending on the comparison result.
 */
wholenumber_t RexxInteger::compareTo(RexxObject *other )
{
    // just send this as a message directly to the string object.
    return stringValue()->compareTo(other);
}
 
 
/**
 * Override for the normal isinstanceof method.  This version
 * allows the IntegerClass to "lie" about being a string.
 *
 * @param other  The comparison class
 *
 * @return True if the string value is an instance of the target class.
 */
bool RexxInteger::isInstanceOf(RexxClass *other)
{
    return stringValue()->isInstanceOf(other);
}
 
 
/**
 * Retrieve the method instance for an object's defined method.
 *
 * @param method_name
 *               The method name.
 *
 * @return The method object that implements the object method.
 */
RexxMethod *RexxInteger::instanceMethod(RexxString  *method_name)
{
    return stringValue()->instanceMethod(method_name);
}
 
 
/**
 * Return a supplier containing the methods implemented by an
 * object.  Depending on the argument, this is either A) all of
 * the methods, B) just the explicitly set instance methods, or
 * C) the methods provided by a given class.
 *
 * @param class_object
 *               The target class object (optional).
 *
 * @return A supplier with the appropriate method set.
 */
RexxSupplier *RexxInteger::instanceMethods(RexxClass *class_object)
{
    return stringValue()->instanceMethods(class_object);
}
 
 
RexxString *RexxInteger::concatBlank(
    RexxString *other )                /* other object for concatenation    */
/******************************************************************************/
/* Function:  Concatenate an object to an integer                             */
/******************************************************************************/
{
  // JLF same as RexxNumberString, give a chance for an alternative operator
  return this->stringValue()->concatBlank(other);
 
  requiredArgument(other, OREF_positional, ARG_ONE);            /* this is required                  */
  other = REQUEST_STRING(other);       /* ensure a string value             */
  ProtectedObject p(other);
                                       /* do the concatenate                */
  return this->stringValue()->concatWith(other, ' ');
}
 
RexxString *RexxInteger::concat(
    RexxString *other )                /* other object for concatenation    */
/******************************************************************************/
/* Function:  Concatenate an object to an integer                             */
/******************************************************************************/
{
  // JLF same as RexxNumberString, give a chance for an alternative operator
  return this->stringValue()->concatRexx(other);
 
  requiredArgument(other, OREF_positional, ARG_ONE);            /* this is required                  */
  other = REQUEST_STRING(other);       /* ensure a string value             */
  ProtectedObject p(other);
                                       /* do the concatenate                */
  return this->stringValue()->concat(other);
}
 
RexxObject *RexxInteger::plus(
    RexxInteger *other)                /* target other object               */
/******************************************************************************/
/* Function:  Add an integer to another object                                */
/******************************************************************************/
{
                                       /* are we using default digits?      */
  if (number_digits() != Numerics::DEFAULT_DIGITS )
                                       /* nope, we can't do integer arith   */
    return integer_forward(this, plus, other);
  if (other == OREF_NULL)              /* unary                             */
    return this;                       /* just return ourselves             */
  else {                               /* binary                            */
    if (isOfClass(Integer, other)) {       /* adding two integers together?     */
                                       /* add the numbers                   */
      wholenumber_t tempVal = this->value + other->value;
                                       /* result still within range?        */
      if (tempVal <= Numerics::MAX_WHOLENUMBER && tempVal >= Numerics::MIN_WHOLENUMBER)
        return new_integer(tempVal);   /* return as an integer number       */
    }
                                       /* need to do full arithmetic        */
    return integer_forward(this, plus, other);
  }
}
 
RexxObject *RexxInteger::minus(
    RexxInteger *other)                /* target other object               */
/******************************************************************************/
/* Function:  Subtract another object from an integer                         */
/******************************************************************************/
{
                                       /* are we using default digits?      */
  if (number_digits() != Numerics::DEFAULT_DIGITS )
                                       /* nope, then we can do integer arith*/
    return integer_forward(this, minus, other);
 
  if (other == OREF_NULL) {            /* unary subtraction operator        */
    return new_integer(-this->value);  /* and return a new integer          */
  }
  else {                               /* binary subtraction operation      */
    if (isOfClass(Integer, other)) {       /* subtracting two integers?         */
                                       /* subtract the numbers              */
      wholenumber_t tempVal = this->value - other->value;
                                       /* result still within range?        */
      if (tempVal <= Numerics::MAX_WHOLENUMBER && tempVal >= Numerics::MIN_WHOLENUMBER)
        return new_integer(tempVal);   /* return as an integer number       */
    }
                                       /* need to do full arithmetic        */
    return integer_forward(this, minus, other);
  }
}
 
RexxObject *RexxInteger::multiply(
    RexxInteger *other)                /* target other object               */
/******************************************************************************/
/* Function:  Multiply an integer by another object                           */
/******************************************************************************/
{
                                       /* are we using default digits?      */
  if (number_digits() != Numerics::DEFAULT_DIGITS )
                                       /* nope, we can't do integer math    */
    return integer_forward(this, multiply, other);
  requiredArgument(other, OREF_positional, ARG_ONE);            /* make sure the argument is there   */
                                       /* is the other an integer and will  */
                                       /* the result be in a good range?    */
  if (isOfClass(Integer, other) && Numerics::abs(this->value) <= 99999 && Numerics::abs(other->value) <= 9999)
  {
    /* multiply directly                 */
    return new_integer(this->value * other->value);
  }
  else                                 /* do the slow way                   */
    return integer_forward(this, multiply, other);
}
 
RexxObject *RexxInteger::divide(
    RexxInteger *other)                /* target other object               */
/******************************************************************************/
/* Function:  Perform division (actually done as numberstring math)           */
/******************************************************************************/
{
                                       /* just forward this                 */
  return integer_forward(this, divide, other);
}
 
RexxObject *RexxInteger::integerDivide(
    RexxInteger *other)                /* target other object               */
/******************************************************************************/
/* Function:  Perform integer division                                        */
/******************************************************************************/
{
                                       /* are we using default digits?      */
  if (number_digits() != Numerics::DEFAULT_DIGITS )
                                       /* nope, we can't do integer arith   */
    return integer_forward(this, integerDivide, other);
  requiredArgument(other, OREF_positional, ARG_ONE);            /* make sure this is really there    */
 
  if (isOfClass(Integer, other)) {         /* is right object an integer?       */
                                       /* is right number 0?                */
    if (other->value != 0)
    {
        // do the division directly
        return new_integer(this->value / other->value);
    }
    else                               /* yes, raise error.                 */
      reportException(Error_Overflow_zero);
  }
                                       /* not integer, forward to           */
                                       /*numberstring.                      */
  return integer_forward(this, integerDivide, other);
}
 
RexxObject *RexxInteger::remainder(
    RexxInteger *other)                /* target other object               */
/******************************************************************************/
/* Function:  Perform remainder division                                      */
/******************************************************************************/
{
                                       /* are we using default digits?      */
  if (number_digits() != Numerics::DEFAULT_DIGITS )
                                       /* nope, we can't do integer arith   */
    return integer_forward(this, remainder, other);
  requiredArgument(other, OREF_positional, ARG_ONE);            /* make sure this is really there    */
 
  if (isOfClass(Integer, other)) {         /* is right object an integer?       */
                                       /* is right number 0?                */
    if (other->value != 0)
    {
      // we can do this directly
      return new_integer(this->value % other->value);
    }
    else                               /* yes, raise error.                 */
      reportException(Error_Overflow_zero);
  }
                                       /* not integer, forward to           */
                                       /*numberstring.                      */
  return integer_forward(this, remainder, other);
}
 
RexxObject *RexxInteger::power(
    RexxObject *other)                 /* power exponent value              */
/******************************************************************************/
/* Function:  Process integer power operator (actually just a forwarder)      */
/******************************************************************************/
{
                                       /* just send along                   */
  return integer_forward(this, power, other);
}
 
bool RexxInteger::isEqual(
    RexxObject *other)                 /* other comparison object           */
/******************************************************************************/
/* Function:  Primitive strict equal\not equal method.  This determines       */
/*            only strict equality, not greater or less than values.          */
/******************************************************************************/
{
  if (this->isSubClassOrEnhanced())      /* not a primitive?                  */
  {
                                       /* do the full lookup compare        */
      RexxObject *result = this->sendMessage(OREF_STRICT_EQUAL, other);
      if (result == OREF_NULL)
      {
          reportException(Error_No_result_object_message, OREF_STRICT_EQUAL);
      }
      return result->truthValue(Error_Logical_value_method);
  }
 
  if (isOfClass(Integer, other))           /* two integers?                     */
                                       /* just directly compare the values  */
    return this->value == ((RexxInteger *)other)->value;
                                       /* go do a string compare            */
  return this->stringValue()->isEqual(other);
}
 
wholenumber_t RexxInteger::strictComp(
    RexxObject *other, RexxString *alternativeOperator, RexxInteger **alternativeOperatorResultPtr)                 /* other comparison value            */
/******************************************************************************/
/* Function:  Compare the two values.                                         */
/*                                                                            */
/*  Returned:  return <0 if other is greater than this                        */
/*             return  0 if this equals other                                 */
/*             return >0 if this is greater than other                        */
/******************************************************************************/
{
  requiredArgument(other, OREF_positional, ARG_ONE);            /* make sure this is really there    */
  if (isOfClass(Integer, other))           /* string compare is simple          */
                                       /* just return their difference      */
    return this->value - ((RexxInteger *)other)->value;
  else                                 /* go do a string compare            */
    return this->stringValue()->strictComp(/*(RexxString *)*/other, alternativeOperator, alternativeOperatorResultPtr);
}
 
 
/**
 * Do a comparison operation between an Integer object and
 * another object.
 *
 * @param other  The other object.
 *
 * @return true if the two objects compare equal, false for an
 *         unequal result.
 */
wholenumber_t RexxInteger::comp(RexxObject *other, RexxString *alternativeOperator, RexxInteger **alternativeOperatorResultPtr)
{
    requiredArgument(other, OREF_positional, ARG_ONE);            /* make sure this is really there    */
                                         /* able to compare here?             */
    if (this->isSameType(other) && number_digits() == Numerics::DEFAULT_DIGITS)
    {
        /* just return the difference        */
        return this->value - ((RexxInteger *)other)->value;
    }
    else                                 /* do a numberstring compare         */
    {
        return this->numberString()->comp(other, alternativeOperator, alternativeOperatorResultPtr);
    }
}
 
 
/**
 * Exported version of the HASHCODE method for retrieving the
 * object's hash.
 *
 * @return A string version of the hash (generally holds binary characters).
 */
RexxObject *RexxInteger::hashCode()
{
    // get the hash value, which is actually derived from the integer string value
    HashCode hashVal = this->hash();
    return new_string((char *)&hashVal, sizeof(HashCode));
}
 
 
RexxInteger *RexxInteger::strictEqual(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  Perform the primitive level "==" compare, including the hash    */
/*            value processing.                                               */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheFalseObject;
    }
    // return this->strictComp(other) == 0 ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->strictComp(other, OREF_STRICT_EQUAL_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result == 0) ? TheTrueObject : TheFalseObject;
}
 
 
RexxInteger *RexxInteger::strictNotEqual(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  Strict inequality operation                                     */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheTrueObject;
    }
                                       /* return strict compare result      */
    // return (this->strictComp(other) != 0) ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->strictComp(other, OREF_STRICT_BACKSLASH_EQUAL_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result != 0) ? TheTrueObject : TheFalseObject;
}
 
RexxInteger *RexxInteger::equal(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  non-strict "=" operator                                         */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheFalseObject;
    }
    // return this->comp(other) == 0 ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->comp(other, OREF_EQUAL_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result == 0) ? TheTrueObject : TheFalseObject;
}
 
RexxInteger *RexxInteger::notEqual(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  non-strict "\=" operator                                        */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheTrueObject;
    }
    // return this->comp(other) != 0 ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->comp(other, OREF_BACKSLASH_EQUAL_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result != 0) ? TheTrueObject : TheFalseObject;
}
 
RexxInteger *RexxInteger::isGreaterThan(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  non-strict ">" operator                                         */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheFalseObject;
    }
    // return this->comp(other) > 0 ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->comp(other, OREF_GREATERTHAN_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result > 0) ? TheTrueObject : TheFalseObject;
}
 
RexxInteger *RexxInteger::isLessThan(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  non-strict "<" operator                                         */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheFalseObject;
    }
    // return this->comp(other) < 0 ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->comp(other, OREF_LESSTHAN_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result < 0) ? TheTrueObject : TheFalseObject;
}
 
RexxInteger *RexxInteger::isGreaterOrEqual(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  non-strict ">=" operator                                        */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheFalseObject;
    }
    // return this->comp(other) >= 0 ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->comp(other, OREF_GREATERTHAN_EQUAL_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result >= 0) ? TheTrueObject : TheFalseObject;
}
 
RexxInteger *RexxInteger::isLessOrEqual(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  non-strict "<=" operator                                        */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheFalseObject;
    }
    // return this->comp(other) <= 0 ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->comp(other, OREF_LESSTHAN_EQUAL_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result <= 0) ? TheTrueObject : TheFalseObject;
}
 
 
RexxInteger *RexxInteger::strictGreaterThan(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  strict ">>" operator                                            */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheFalseObject;
    }
    // return this->strictComp(other) > 0 ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->strictComp(other, OREF_STRICT_GREATERTHAN_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result > 0) ? TheTrueObject : TheFalseObject;
}
 
RexxInteger *RexxInteger::strictLessThan(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  strict "<<" operator                                            */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheFalseObject;
    }
    // return this->strictComp(other) < 0 ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->strictComp(other, OREF_STRICT_LESSTHAN_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result < 0) ? TheTrueObject : TheFalseObject;
}
 
RexxInteger *RexxInteger::strictGreaterOrEqual(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  strict ">>=" operator                                           */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheFalseObject;
    }
    // return this->strictComp(other) >= 0 ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->strictComp(other, OREF_STRICT_GREATERTHAN_EQUAL_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result >= 0) ? TheTrueObject : TheFalseObject;
}
 
RexxInteger *RexxInteger::strictLessOrEqual(
    RexxObject *other)                 /* other comparison value            */
/******************************************************************************/
/* Function:  strict "<<=" operator                                           */
/******************************************************************************/
{
    if (other == TheNilObject)           // all conditionals return .false when compared to .nil
    {
        return TheFalseObject;
    }
    // return this->strictComp(other) <= 0 ? TheTrueObject : TheFalseObject;
    RexxInteger *alternativeResult = OREF_NULL;
    wholenumber_t result = this->strictComp(other, OREF_STRICT_LESSTHAN_EQUAL_RIGHT, &alternativeResult);
    if (alternativeResult != OREF_NULL) return alternativeResult;
    return (result <= 0) ? TheTrueObject : TheFalseObject;
}
 
RexxObject *RexxInteger::notOp()
/******************************************************************************/
/* Function:  Perform the logical not of an integer object                    */
/******************************************************************************/
{
                                       /* perform the operation             */
  return this->truthValue(Error_Logical_value_method) ? TheFalseObject : TheTrueObject;
}
 
RexxObject *RexxInteger::operatorNot(
    RexxObject *dummy )                /* dummy for polymorphic operators   */
/******************************************************************************/
/* Function:  Perform the logical not of an integer object                    */
/******************************************************************************/
{
                                       /* perform the operation             */
  return this->truthValue(Error_Logical_value_method) ? TheFalseObject : TheTrueObject;
}
 
RexxObject *RexxInteger::andOp(
    RexxObject *other)                 /* other logical value               */
/******************************************************************************/
/* Function:  Logically AND two objects together                              */
/******************************************************************************/
{
  RexxObject *otherTruth;              /* truth value of the other object   */
 
  requiredArgument(other, OREF_positional, ARG_ONE);            /* make sure the argument is there   */
 
    // Before doing a logical value operation, try the alternative operator, if any.
    // Do that only if 'other' is not a string and not a number and not an integer (no performance degradation)
    if (!isPolymorphicString(other))
    {
        // Try an alternative operator
        ProtectedObject result;
        RexxObject *args[1];
        args[0] = this; // positional argument
        bool alternativeResult = other->messageSend(OREF_AND_RIGHT, args, 1, 0, result, false);
        if (alternativeResult && (RexxObject *)result != OREF_NULL) return (RexxObject *)result;
    }
 
                                       /* validate the boolean              */
  otherTruth = other->truthValue(Error_Logical_value_method) ? TheTrueObject : TheFalseObject;
                                       /* perform the operation             */
  return (!this->truthValue(Error_Logical_value_method)) ? TheFalseObject : otherTruth;
}
 
RexxObject *RexxInteger::orOp(
    RexxObject *other)                 /* other logical value               */
/******************************************************************************/
/* Function:  Logically OR two objects together                               */
/******************************************************************************/
{
  RexxObject *otherTruth;              /* truth value of the other object   */
 
  requiredArgument(other, OREF_positional, ARG_ONE);            /* make sure the argument is there   */
 
    // Before doing a logical value operation, try the alternative operator, if any.
    // Do that only if 'other' is not a string and not a number and not an integer (no performance degradation)
    if (!isPolymorphicString(other))
    {
        // Try an alternative operator
        ProtectedObject result;
        RexxObject *args[1];
        args[0] = this; // positional argument
        bool alternativeResult = other->messageSend(OREF_OR_RIGHT, args, 1, 0, result, false);
        if (alternativeResult && (RexxObject *)result != OREF_NULL) return (RexxObject *)result;
    }
 
                                       /* validate the boolean              */
  otherTruth = other->truthValue(Error_Logical_value_method) ? TheTrueObject : TheFalseObject;
                                       /* perform the operation             */
  return (this->truthValue(Error_Logical_value_method)) ? TheTrueObject : otherTruth;
}
 
RexxObject *RexxInteger::xorOp(
    RexxObject *other)                 /* other logical value               */
/******************************************************************************/
/* Function:  Logically XOR two objects together                              */
/******************************************************************************/
{
  requiredArgument(other, OREF_positional, ARG_ONE);            /* make sure the argument is there   */
 
    // Before doing a logical value operation, try the alternative operator, if any.
    // Do that only if 'other' is not a string and not a number and not an integer (no performance degradation)
    if (!isPolymorphicString(other))
    {
        // Try an alternative operator
        ProtectedObject result;
        RexxObject *args[1];
        args[0] = this; // positional argument
        bool alternativeResult = other->messageSend(OREF_XOR_RIGHT, args, 1, 0, result, false);
        if (alternativeResult && (RexxObject *)result != OREF_NULL) return (RexxObject *)result;
    }
 
                                       /* get as a boolean                  */
  bool truth = other->truthValue(Error_Logical_value_method);
                                       /* first one false?                  */
  if (!this->truthValue(Error_Logical_value_method))
                                       /* value is always the second        */
    return truth ? TheTrueObject : TheFalseObject;
  else                                 /* value is inverse of second        */
    return (truth) ? TheFalseObject : TheTrueObject;
}
 
RexxObject *RexxInteger::abs()
/******************************************************************************/
/* Function:  Take the absolute value of an integer object                    */
/******************************************************************************/
{
                                       /* working under the default digits? */
 if (number_digits() == Numerics::DEFAULT_DIGITS) {
     /* if we're already positive, this is a quick return */
     if (value >= 0) {
         return this;
     }
     return new_integer(-value);       /* return as an integer object       */
 }
 else
   return this->numberString()->abs(); /* do a numberstring operation       */
}
 
RexxObject *RexxInteger::sign()
/******************************************************************************/
/* Function:  SIGN() function on an integer object                            */
/******************************************************************************/
{
  RexxObject *result;                  /* returned result                   */
 
 if (this->value > 0)                  /* positive number?                  */
   result = IntegerOne;                /* result is "1"                     */
 else if (this->value < 0)             /* negative number?                  */
  result = new_integer(-1);            /* result is "-1"                    */
 else
  result = IntegerZero;                /* exactly zero                      */
 return result;                        /* return the value                  */
}
 
RexxObject *RexxInteger::Max(
    RexxObject **args,                 /* array of comparison values        */
    size_t argCount,                   /* count of arguments                */
    size_t named_argCount)
/******************************************************************************/
/* Function:  Perform MAX function on integer objects                         */
/******************************************************************************/
{
  wholenumber_t maxvalue;              /* current maximum                   */
  size_t       arg;                    /* current arg position              */
  RexxObject * argument;               /* current argument object           */
 
 
                                       /* are we using default digits?      */
  if (number_digits() != Numerics::DEFAULT_DIGITS )
                                       /* nope, we can't do integer max.    */
   return this->numberString()->Max(args, argCount, named_argCount);
 
  if (argCount < 1)                    /* no comparisons to do?             */
    return (RexxObject *)this;         /* just return this as the result    */
 
  maxvalue = this->value;              /* assume first number is our max.   */
 
                                       /* check each numbers to see if      */
                                       /* larger than the max.              */
  for (arg = 0; arg < argCount; arg++) {
    argument = args[arg];              /* get next argument element         */
 
    if (argument == OREF_NULL)         /* was argument missging ?           */
                                       /* Yes, report the error.            */
      reportException(Error_Incorrect_method_noarg, OREF_positional, arg);
 
    if (isOfClass(Integer, argument)) {    /* is this an INTEGER object?        */
                                       /* yes, gets its value.              */
      wholenumber_t v = ((RexxInteger *)argument)->getValue();
      if (v > maxvalue)                /* is this number larger than max?   */
        maxvalue = v;                  /* yes, it is our new max.           */
    }
    else {                             /* not an integer, compare isn't     */
                                         /* not all integers, convert into a  */
                                         /* NumberString, and let NumberString*/
                                         /* figure this out.                  */
      return this->numberString()->Max(args, argCount, named_argCount);
    }
  }
 
  return new_integer(maxvalue);      /* yes, then max is our max number   */
}
 
RexxObject *RexxInteger::Min(
    RexxObject **args,                 /* array of comparison values        */
    size_t argCount,                   /* count of arguments                */
    size_t named_argCount)
/******************************************************************************/
/* Function:  Perform MAX function on integer objects                         */
/******************************************************************************/
{
  wholenumber_t minvalue;              /* current minimum                   */
  size_t       arg;                    /* current arg position              */
  RexxObject * argument;               /* current argument object           */
 
                                       /* are we using default digits?      */
  if (number_digits() != Numerics::DEFAULT_DIGITS )
                                       /* nope, we can't do integer max.    */
   return this->numberString()->Min(args, argCount, named_argCount);
 
  if (argCount < 1)                    /* no comparisons to do?             */
    return (RexxObject *)this;         /* just return this as the result    */
 
  minvalue = this->value;              /* assume first number is our min.   */
 
                                       /* check each numbers to see if      */
                                       /* larger than the max.              */
  for (arg = 0; arg < argCount; arg++) {
    argument = args[arg];              /* get next argument element         */
 
    if (argument == OREF_NULL)         /* was argument missging ?           */
                                       /* Yes, report the error.            */
      reportException(Error_Incorrect_method_noarg, OREF_positional, arg);
 
    if (isOfClass(Integer, argument)) {    /* is this an INTEGER object?        */
                                       /* yes, gets its value.              */
      wholenumber_t v = ((RexxInteger *)argument)->getValue();
      if (v < minvalue)                /* is this number larger than min?   */
        minvalue = v;                  /* yes, it is our new max.           */
    }
    else {                             /* not an integer, compare isn't     */
                                         /* not all integers, convert into a  */
                                         /* NumberString, and let NumberString*/
                                         /* figure this out.                  */
      return this->numberString()->Min(args, argCount, named_argCount);
    }
  }
 
  return new_integer(minvalue);      /* yes, then max is our max number   */
}
 
RexxObject *RexxInteger::trunc(
    RexxObject *decimals)              /* number of decimal digits requested*/
/******************************************************************************/
/* Function:  Act as a front end for the actual TRUNC REXX method             */
/******************************************************************************/
{
                                       /* just forward to numberstring      */
  return this->numberString()->trunc(decimals);
}
 
/**
 * Calculate the floor value for a numeric value
 *
 * @return The floor value.
 */
RexxObject *RexxInteger::floor()
{
    // the floor of an integer is always the same value
    return this;
}
 
/**
 * Calculate the ceiling value for a numeric value
 *
 * @return The ceiling value.
 */
RexxObject *RexxInteger::ceiling()
{
    // the ceiling of an integer is always the same value
    return this;
}
 
/**
 * Calculate the round value for a numeric value
 *
 * @return The round value.
 */
RexxObject *RexxInteger::round()
{
    // the rounding of an integer is always the same value
    return this;
}
 
RexxObject *RexxInteger::format(
  RexxObject *Integers,                /* space for integer part            */
  RexxObject *Decimals,                /* number of decimals required       */
  RexxObject *MathExp,                 /* the exponent size                 */
  RexxObject *ExpTrigger )             /* the exponent trigger              */
/******************************************************************************/
/* Function:  Act as a front end for the actual FORMAT REXX method            */
/******************************************************************************/
{
  return this->numberString()->formatRexx(Integers, Decimals, MathExp, ExpTrigger);
}
 
RexxObject *RexxInteger::d2c(
    RexxObject *length)                /* length of result                  */
/******************************************************************************/
/* Function:  Convert a decimal number string into a character string         */
/******************************************************************************/
{
                                       /* format as a string value          */
  return this->numberString()->d2xD2c(length, true);
}
 
RexxObject *RexxInteger::d2x(
    RexxObject *length)                /* length of result                  */
/******************************************************************************/
/* Function:  Convert a decimal number string into a hexadecimal string       */
/******************************************************************************/
{
                                       /* format as a string value          */
  return this->numberString()->d2xD2c(length, false);
}
 
RexxObject  *RexxInteger::evaluate(
    RexxActivation      *context,      /* current activation context        */
    RexxExpressionStack *stack )       /* evaluation stack                  */
/******************************************************************************/
/* Function:  Polymorphic method that makes integer a polymorphic expression  */
/*            term for literals                                               */
/******************************************************************************/
{
  stack->push(this);                   /* place on the evaluation stack     */
                                       /* trace if necessary                */
  context->traceIntermediate(this, TRACE_PREFIX_LITERAL);
  return this;                         /* also return the result            */
}
 
 
RexxObject  *RexxInteger::getValue(
    RexxActivation *context)           /* current activation context        */
/******************************************************************************/
/* Function:  Polymorphic get_value function used with expression terms       */
/******************************************************************************/
{
  return (RexxObject *)this;           /* just return this value            */
}
 
 
RexxObject  *RexxInteger::getValue(
    RexxVariableDictionary *context)   /* current activation context        */
/******************************************************************************/
/* Function:  Polymorphic get_value function used with expression terms       */
/******************************************************************************/
{
  return (RexxObject *)this;           /* just return this value            */
}
 
 
RexxObject  *RexxInteger::getRealValue(
    RexxActivation *context)           /* current activation context        */
/******************************************************************************/
/* Function:  Polymorphic get_value function used with expression terms       */
/******************************************************************************/
{
  return (RexxObject *)this;           /* just return this value            */
}
 
 
RexxObject  *RexxInteger::getRealValue(
    RexxVariableDictionary *context)   /* current activation context        */
/******************************************************************************/
/* Function:  Polymorphic get_value function used with expression terms       */
/******************************************************************************/
{
  return (RexxObject *)this;           /* just return this value            */
}
 
/* **************************************** */
/*  Integer class methods begin here .....  */
/* **************************************** */
 
RexxIntegerClass::RexxIntegerClass()
/******************************************************************************/
/* This method will pre-allocate 100 integer objects, 0-99.  These will then  */
/*  be used when ever a request for an integer between 0 and 99 is requested  */
/*  this should help reduce some of our memory requirements and trips through */
/*  memory_new.                                                               */
/******************************************************************************/
{
 int i;                                /* loop counter                      */
 
 for (i=INTEGERCACHELOW; i<INTEGERCACHESIZE; i++ ) {  /* now create all our cached integers*/
   OrefSet(this, this->integercache[i - INTEGERCACHELOW], new  RexxInteger (i));
   /* force the item to create its string value too.  This can save */
   /* us a lot of time when string indices are used for compound */
   /* variables and also eliminate a bunch of old-new table */
   /* references. */
   this->integercache[i - INTEGERCACHELOW]->stringValue();
 }
}
 
void RexxIntegerClass::live(size_t liveMark)
/******************************************************************************/
/* Function:  Normal garbage collection live marking                          */
/******************************************************************************/
{
  int i;                               /* loop counter                      */
 
  this->RexxClass::live(liveMark);     /* do RexxClass level marking        */
 
                                       /* now mark the cached integers      */
  for (i = INTEGERCACHELOW; i < INTEGERCACHESIZE ;i++ )
  {
       memory_mark(this->integercache[i - INTEGERCACHELOW]);
  }
}
 
void RexxIntegerClass::liveGeneral(int reason)
/******************************************************************************/
/* Function:  Generalized object marking                                      */
/******************************************************************************/
{
  int  i;                              /* loop counter                      */
 
  this->RexxClass::liveGeneral(reason); /* do RexxClass level marking        */
 
                                       /* now mark the cached integers      */
  for (i = INTEGERCACHELOW; i < INTEGERCACHESIZE ;i++ )
  {
      memory_mark_general(this->integercache[i - INTEGERCACHELOW]);
  }
}
 
RexxClass   *RexxInteger::classObject()
/******************************************************************************/
/* Function:  Return the String class object for integer instances            */
/******************************************************************************/
{
                                       /* just return class from behaviour  */
  return TheStringClass;
}
 
void *RexxInteger::operator new(size_t size)
/******************************************************************************/
/* Function:  Create a new integer object                                     */
/******************************************************************************/
{
    RexxObject *newObject = new_object(size, T_Integer);        /* get a new object                  */
    newObject->setHasNoReferences();     /* Tell GC, not to bother with Live  */
    return newObject;                    /* return the new object.            */
}
 
void RexxInteger::createInstance()
/******************************************************************************/
/* Function:  Create the integer class and set up the integer cache           */
/******************************************************************************/
{
    /* Create the Integer class object   */
    /*  its asubclass of the CLASS class,*/
    /*  and needs to override the NEW    */
    /*  method to provide caching        */
    /*  support for integers.            */
    CLASS_CREATE(Integer, "String", RexxIntegerClass);
    /*  initialize our static array of   */
    /*  cached integers                  */
    new (TheIntegerClass) RexxIntegerClass();
}
 
 
PCPPM RexxInteger::operatorMethods[] =
{
   NULL,
   (PCPPM)&RexxInteger::plus,                   //  "+"
   (PCPPM)&RexxInteger::minus,                  //  "-"
   (PCPPM)&RexxInteger::multiply,               //  "*"
   (PCPPM)&RexxInteger::divide,                 //  "/"
   (PCPPM)&RexxInteger::integerDivide,          //  "%"
   (PCPPM)&RexxInteger::remainder,              //  "//"
   (PCPPM)&RexxInteger::power,                  //  "**"
   (PCPPM)&RexxInteger::concat,                 //  ""      should be ::abuttal
   (PCPPM)&RexxInteger::concat,                 //  "||"
   (PCPPM)&RexxInteger::concatBlank,            //  " "
   (PCPPM)&RexxInteger::equal,                  //  "="
   (PCPPM)&RexxInteger::notEqual,               //  "\="
   (PCPPM)&RexxInteger::isGreaterThan,          //  ">"
   (PCPPM)&RexxInteger::isLessOrEqual,          //  ">"    should be ::isBackslashGreaterThan
   (PCPPM)&RexxInteger::isLessThan,             //  "<"
   (PCPPM)&RexxInteger::isGreaterOrEqual,       //  "<"    should be ::isBackslashLessThan
   (PCPPM)&RexxInteger::isGreaterOrEqual,       //  ">="
   (PCPPM)&RexxInteger::isLessOrEqual,          //  "<="
   (PCPPM)&RexxInteger::strictEqual,            //  "=="
   (PCPPM)&RexxInteger::strictNotEqual,         //  "\=="
   (PCPPM)&RexxInteger::strictGreaterThan,      //  ">>"
   (PCPPM)&RexxInteger::strictLessOrEqual,      //  ">>"   should be ::strictBackslashGreaterThan
   (PCPPM)&RexxInteger::strictLessThan,         //  "<<"
   (PCPPM)&RexxInteger::strictGreaterOrEqual,   //  "<<"   should be ::strictBackslashLessThan
   (PCPPM)&RexxInteger::strictGreaterOrEqual,   //  ">>="
   (PCPPM)&RexxInteger::strictLessOrEqual,      //  "<<="
   (PCPPM)&RexxInteger::notEqual,               //  "<>"    should be ::lessThanGreaterThan
   (PCPPM)&RexxInteger::notEqual,               //  "><"    should be ::greaterThanLessThan
   (PCPPM)&RexxInteger::andOp,                  //  "&"
   (PCPPM)&RexxInteger::orOp,                   //  "|"
   (PCPPM)&RexxInteger::xorOp,                  //  "&&"
   (PCPPM)&RexxInteger::operatorNot,            //  "\"
};