102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
/*************************************************************************
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* *
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* YAP Prolog @(#)eval.h 1.2
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
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* *
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**************************************************************************
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* *
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* File: eval.h *
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* Last rev: *
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* mods: *
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* comments: arithmetical functions info *
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* *
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*************************************************************************/
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#include <stdlib.h>
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/* C library used to implement floating point functions */
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#if HAVE_MATH_H
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#include <math.h>
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#endif
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#if HAVE_IEEEFP_H
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#include <ieeefp.h>
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#endif
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#if HAVE_LIMITS_H
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#include <limits.h>
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#endif
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#ifdef LONG_MAX
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#define Int_MAX LONG_MAX
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#else
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#define Int_MAX ((Int)((~((CELL)0))>>1))
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#endif
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#ifdef LONG_MIN
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#define Int_MIN LONG_MIN
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#else
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#define Int_MIN (-Int_MAX-(CELL)1)
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#endif
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typedef union arith_ret {
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Int Int;
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Float dbl;
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#ifdef USE_GMP
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MP_INT *big;
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#endif
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} *arith_retptr;
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/*
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#define RINT(v) return(MkIntegerTerm(v))
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#define RFLOAT(v) return(MkFloatTerm(v))
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#define RBIG(v) return(_YAP_MkBigIntTerm(v))
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#define RBIG_FL(v) return(_YAP_MkBigIntTerm((MP_INT *)(Int)v))
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#define RERROR() return(MkIntTerm(0))
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*/
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Functor STD_PROTO(EvalArg,(Term,arith_retptr));
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/* Needed to handle numbers:
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these two macros are fundamental in the integer/float conversions */
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#ifdef C_PROLOG
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#define FlIsInt(X) ( (X) == (Int)(X) && IntInBnd((X)) )
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#else
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#define FlIsInt(X) ( FALSE )
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#endif
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#ifdef M_WILLIAMS
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#define MkEvalFl(X) MkFloatTerm(X)
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#else
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#define MkEvalFl(X) ( FlIsInt(X) ? MkIntTerm((Int)(X)) : MkFloatTerm(X) )
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#endif
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/* Macros used by some of the eval functions */
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#define REvalInt(I) { eval_int = (I); return(FInt); }
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#define REvalFl(F) { eval_flt = (F); return(FFloat); }
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#define REvalError() { return(FError); }
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/* this macro, dependent on the particular implementation
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is used to interface the arguments into the C libraries */
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#if MPW
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#define FL(X) ((extended)(X))
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#else
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#define FL(X) ((double)(X))
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#endif
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extern yap_error_number _YAP_matherror;
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void STD_PROTO(_YAP_InitConstExps,(void));
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void STD_PROTO(_YAP_InitUnaryExps,(void));
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void STD_PROTO(_YAP_InitBinaryExps,(void));
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int STD_PROTO(_YAP_ReInitConstExps,(void));
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int STD_PROTO(_YAP_ReInitUnaryExps,(void));
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int STD_PROTO(_YAP_ReInitBinaryExps,(void));
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blob_type STD_PROTO(_YAP_Eval,(Term, union arith_ret *));
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