mirror of
https://github.com/Interlisp/maiko.git
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171 lines
4.9 KiB
C
171 lines
4.9 KiB
C
/* $Id: fp.c,v 1.3 1999/05/31 23:35:29 sybalsky Exp $ (C) Copyright Venue, All Rights Reserved */
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static char *id = "$Id: fp.c,v 1.3 1999/05/31 23:35:29 sybalsky Exp $ Copyright (C) Venue";
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/************************************************************************/
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/* */
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/* (C) Copyright 1989-95 Venue. All Rights Reserved. */
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/* Manufactured in the United States of America. */
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/* */
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/* The contents of this file are proprietary information */
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/* belonging to Venue, and are provided to you under license. */
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/* They may not be further distributed or disclosed to third */
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/* parties without the specific permission of Venue. */
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/* */
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/************************************************************************/
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#include "version.h"
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/************************************************************************/
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/* */
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/* F P . C */
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/* */
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/* Floating-point arithmetic code. */
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/* */
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/************************************************************************/
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#include <stdio.h>
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#include "lispemul.h"
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#include "lspglob.h"
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#include "adr68k.h"
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#include "lispmap.h"
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#include "lsptypes.h"
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#include "emlglob.h"
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#include "my.h"
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#include "medleyfp.h"
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/************************************************************
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N_OP_fplus2 -- op 350
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N_OP_fdifference -- op 351
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N_OP_ftimes2 -- op 352
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N_OP_fquotient -- op 353
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N_OP_fgreaterp -- op 362
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***********************************************************/
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DLword *createcell68k(unsigned int type);
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/************************************************************************/
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/* */
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/* N _ O P _ f p l u s 2 */
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/* */
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/* 2-argument floating point addition opcode */
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/* */
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/************************************************************************/
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LispPTR N_OP_fplus2(LispPTR parg1, LispPTR parg2) {
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REGISTER float arg1;
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REGISTER float arg2;
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REGISTER float result;
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register DLword *wordp;
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N_MakeFloat(parg1, arg1, parg2);
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N_MakeFloat(parg2, arg2, parg2);
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FPCLEAR;
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#ifdef I386
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I386Round;
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#endif
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result = arg1 + arg2;
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if (FPTEST(result)) ERROR_EXIT(parg2);
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wordp = createcell68k(TYPE_FLOATP);
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*((float *)wordp) = result;
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return (LADDR_from_68k(wordp));
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} /* end N_OP_fplus2() */
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/************************************************************************/
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/* */
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/* N _ O P _ f d i f f e r e n c e */
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/* */
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/* 2-arugment floating-point subtraction. */
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/* */
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/************************************************************************/
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LispPTR N_OP_fdifference(LispPTR parg1, LispPTR parg2) {
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REGISTER float arg1, arg2;
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REGISTER float result;
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register DLword *wordp;
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N_MakeFloat(parg1, arg1, parg2);
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N_MakeFloat(parg2, arg2, parg2);
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FPCLEAR;
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#ifdef I386
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I386Round;
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#endif
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result = arg1 - arg2;
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if (FPTEST(result)) ERROR_EXIT(parg2);
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wordp = createcell68k(TYPE_FLOATP);
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*((float *)wordp) = result;
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return (LADDR_from_68k(wordp));
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} /* end N_OP_fdifference() */
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/************************************************************************/
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/* */
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/* N _ O P _ f t i m e s 2 */
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/* */
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/* Floating-point multiplication */
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/* */
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/************************************************************************/
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LispPTR N_OP_ftimes2(LispPTR parg1, LispPTR parg2) {
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REGISTER float arg1, arg2;
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REGISTER float result;
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register DLword *wordp;
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N_MakeFloat(parg1, arg1, parg2);
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N_MakeFloat(parg2, arg2, parg2);
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FPCLEAR;
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#ifdef I386
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I386Round;
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#endif
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result = arg1 * arg2;
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if (FPTEST(result)) ERROR_EXIT(parg2);
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wordp = createcell68k(TYPE_FLOATP);
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*((float *)wordp) = result;
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return (LADDR_from_68k(wordp));
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} /* end N_OP_ftimes2() */
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/************************************************************************/
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/* */
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/* N _ O P _ f q u o t i e n t */
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/* */
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/* floating-point division */
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/* */
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/************************************************************************/
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LispPTR N_OP_fquotient(LispPTR parg1, LispPTR parg2) {
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REGISTER float arg1, arg2;
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REGISTER float result;
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register DLword *wordp;
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N_MakeFloat(parg1, arg1, parg2);
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N_MakeFloat(parg2, arg2, parg2);
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FPCLEAR;
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#ifdef I386
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I386Round;
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#endif
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result = arg1 / arg2;
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if (FPTEST(result)) ERROR_EXIT(parg2);
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wordp = createcell68k(TYPE_FLOATP);
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*((float *)wordp) = result;
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return (LADDR_from_68k(wordp));
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} /* end N_OP_fquotient() */
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/************************************************************************/
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/* */
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/* N _ O P _ f g r e a t e r p */
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/* */
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/* Floating-point > */
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/* */
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/************************************************************************/
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LispPTR N_OP_fgreaterp(LispPTR parg1, LispPTR parg2) {
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REGISTER float arg1, arg2;
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register DLword *wordp;
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register LispPTR lptr;
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N_MakeFloat(parg1, arg1, parg2);
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N_MakeFloat(parg2, arg2, parg2);
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if (arg1 > arg2)
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return (ATOM_T);
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else
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return (NIL_PTR);
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} /* end N_OP_fgreaterp() */
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