/usr/include/gap/integer.h is in gap-dev 4r6p5-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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**
*W integer.h GAP source Martin Schönert
** & Alice Niemeyer
** & Werner Nickel
**
**
*Y Copyright (C) 1996, Lehrstuhl D für Mathematik, RWTH Aachen, Germany
*Y (C) 1998 School Math and Comp. Sci., University of St Andrews, Scotland
*Y Copyright (C) 2002 The GAP Group
**
** This file declares the functions handling arbitrary size integers.
*/
#ifndef GAP_INTEGER_H
#define GAP_INTEGER_H
#ifdef USE_GMP /* then use the gmp version of the header file */
#include "gmpints.h"
#else /* read the rest of this file */
/****************************************************************************
**
*T TypDigit . . . . . . . . . . . . . . . . . . . . type of a single digit
**
** 'TypDigit' is the type of a single digit of an arbitrary size integer.
** This is of course unsigned short int, which gives us the 16 bits we want.
*/
#ifdef SYS_IS_64_BIT
typedef UInt4 TypDigit;
#define INTEGER_UNIT_SIZE 4
#define INTEGER_ALLOCATION_SIZE 16
#else
typedef UInt2 TypDigit;
#define INTEGER_UNIT_SIZE 2
#define INTEGER_ALLOCATION_SIZE 8
#endif
#define NR_DIGIT_BITS (8 * sizeof(TypDigit))
#define INTBASE (1L << NR_DIGIT_BITS)
#define NR_SMALL_INT_BITS (2*NR_DIGIT_BITS - 4)
#define SIZE_INT(op) (SIZE_OBJ(op) / sizeof(TypDigit))
#define ADDR_INT(op) ((TypDigit*)ADDR_OBJ(op))
/**************************************************************************
** The following two functions convert a C Int or UInt respectively into
** a GAP integer, either an immediate, small integer if possible or
** otherwise a new GAP bag with TNUM T_INTPOS or T_INTNEG.
**
*F ObjInt_Int(Int i)
*F ObjInt_UInt(UInt i)
**
****************************************************************************/
Obj ObjInt_Int(Int i);
Obj ObjInt_UInt(UInt i);
/****************************************************************************
**
*F PrintInt( <int> ) . . . . . . . . . . . . . . . print an integer constant
**
** 'PrintInt' prints the integer <int> in the usual decimal notation.
** 'PrintInt' handles objects of type 'T_INT', 'T_INTPOS' and 'T_INTNEG'.
*/
extern void PrintInt (
Obj op );
/****************************************************************************
**
*F EqInt( <intL>, <intR> ) . . . . . . . . . test if two integers are equal
**
** 'EqInt' returns 1 if the two integer arguments <intL> and <intR> are
** equal and 0 otherwise.
*/
extern Int EqInt (
Obj opL,
Obj opR );
/****************************************************************************
**
*F LtInt( <intL>, <intR> ) . . . . . test if an integer is less than another
**
** 'LtInt' returns 1 if the integer <intL> is strictly less than the integer
** <intR> and 0 otherwise.
*/
extern Int LtInt (
Obj opL,
Obj opR );
/****************************************************************************
**
*F SumInt( <intL>, <intR> ) . . . . . . . . . . . . . . sum of two integers
**
** 'SumInt' returns the sum of the two integer arguments <intL> and <intR>.
** 'SumInt' handles operands of type 'T_INT', 'T_INTPOS' and 'T_INTNEG'.
**
** It can also be used in the cases that both operands are small integers
** and the result is a small integer too, i.e., that no overflow occurs.
** This case is usually already handled in 'EvalSum' for a better efficiency.
*/
extern Obj SumInt (
Obj opL,
Obj opR );
/****************************************************************************
**
*F DiffInt( <intL>, <intR> ) . . . . . . . . . . difference of two integers
**
** 'DiffInt' returns the difference of the two integer arguments <intL> and
** <intR>. 'DiffInt' handles operands of type 'T_INT', 'T_INTPOS' and
** 'T_INTNEG'.
**
** It can also be used in the cases that both operands are small integers
** and the result is a small integer too, i.e., that no overflow occurs.
** This case is usually already handled in 'EvalDiff' for a better efficiency.
*/
extern Obj DiffInt (
Obj opL,
Obj opR );
/****************************************************************************
**
*F ProdInt( <intL>, <intR> ) . . . . . . . . . . . . product of two integers
**
** 'ProdInt' returns the product of the two integer arguments <intL> and
** <intR>. 'ProdInt' handles operands of type 'T_INT', 'T_INTPOS' and
** 'T_INTNEG'.
**
** It can also be used in the cases that both operands are small integers
** and the result is a small integer too, i.e., that no overflow occurs.
** This case is usually already handled in 'EvalProd' for a better efficiency.
*/
extern Obj ProdInt (
Obj opL,
Obj opR );
/****************************************************************************
**
*F ModInt( <intL>, <intR> ) . . representant of residue class of an integer
**
** 'ModInt' returns the smallest positive representant of the residue class
** of the integer <intL> modulo the integer <intR>. 'ModInt' handles
** operands of type 'T_INT', 'T_INTPOS', 'T_INTNEG'.
**
** It can also be used in the cases that both operands are small integers
** and the result is a small integer too, i.e., that no overflow occurs.
** This case is usually already handled in 'EvalMod' for a better efficiency.
*/
extern Obj ModInt (
Obj opL,
Obj opR );
/****************************************************************************
**
*F PowInt( <intL>, <intR> ) . . . . . . . . . . . . . . power of an integer
**
** 'PowInt' returns the <intR>-th (an integer) power of the integer <intL>.
** 'PowInt' is handles operands of type 'T_INT', 'T_INTPOS' and 'T_INTNEG'.
**
** It can also be used in the cases that both operands are small integers
** and the result is a small integer too, i.e., that no overflow occurs.
** This case is usually already handled in 'EvalPow' for a better efficiency.
*/
extern Obj PowInt (
Obj opL,
Obj opR );
/****************************************************************************
**
*F QuoInt( <intL>, <intR> ) . . . . . . . . . . . quotient of two integers
**
** 'QuoInt' returns the integer part of the two integers <intL> and <intR>.
** 'QuoInt' handles operands of type 'T_INT', 'T_INTPOS' and 'T_INTNEG'.
**
** It can also be used in the cases that both operands are small integers
** and the result is a small integer too, i.e., that no overflow occurs.
**
** Note that this routine is not called from 'EvalQuo', the division of two
** integers yields a rational and is therefor performed in 'QuoRat'.
** This operation is however available through the internal function 'Quo'.
*/
extern Obj QuoInt (
Obj opL,
Obj opR );
/****************************************************************************
**
*F RemInt( <intL>, <intR> ) . . . . . . . . . . . remainder of two integers
**
** 'RemInt' returns the remainder of the quotient of the integers <intL>
** and <intR>. 'RemInt' handles operands of type 'T_INT', 'T_INTPOS' and
** 'T_INTNEG'.
**
** Note that the remainder is different from the value returned by the 'mod'
** operator which is always positive.
*/
extern Obj RemInt (
Obj opL,
Obj opR );
/****************************************************************************
**
*F GcdInt( <opL>, <opR> ) . . . . . . . . . . . . . . . gcd of two integers
**
** 'GcdInt' returns the gcd of the two integers <opL> and <opR>.
*/
extern Obj GcdInt (
Obj opL,
Obj opR );
extern Obj FuncLog2Int( Obj self, Obj intnum);
/****************************************************************************
**
*F * * * * * * * * * * * * * initialize package * * * * * * * * * * * * * * *
*/
/****************************************************************************
** \
\
*F InitInfoInt() . . . . . . . . . . . . . . . . . . table of init functions
*/
StructInitInfo * InitInfoInt ( void );
#endif // USE_GMP
#endif // GAP_INTEGER_H
/****************************************************************************
**
*E integer.c . . . . . . . . . . . . . . . . . . . . . . . . . . . ends here
*/
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