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9a10f63fe6
* arithmetic opcode implementations should return LispPTR rather than int * all callers of ERROR_EXIT() have return type LispPTR, therefore ERROR_EXIT should too * N_[I]GETNUMBER, [N_]ARITH_SWITCH need (int) casts for some large constants that would otherwise be unsigned * Expand use of macro N_ARITH_BODY_1_UNSIGNED and correct types * Remove unused macros N_ARITH_BODY_1 and N_ARITH_BODY_1_UNSIGNED * Cast to correct type for storing to TopOfStack, and return type of TIMER_EXIT()
167 lines
3.6 KiB
C
167 lines
3.6 KiB
C
/* $Id: arith4.c,v 1.3 1999/05/31 23:35:21 sybalsky Exp $ (C) Copyright Venue, All Rights Reserved
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*/
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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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/************************************************************************/
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#include "version.h"
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/***********************************************************************/
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/*
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File Name : arith4.c
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Including : OP_times2 326Q(OP_itimes2 332Q)
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OP_quot 327Q(OP_iquot 333Q)
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OP_reminder 334Q
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*/
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/**********************************************************************/
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#include "lispemul.h"
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#include "lispmap.h"
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#include "lspglob.h"
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#include "lsptypes.h"
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#include "address.h"
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#include "adr68k.h"
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#include "cell.h"
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#include "medleyfp.h"
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#include "arith.h"
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#include "arith4defs.h"
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#include "fpdefs.h"
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#include "mkcelldefs.h"
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/**********************************************************************/
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/*
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Func name : N_OP_times2(itimes2)
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*/
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/**********************************************************************/
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LispPTR N_OP_times2(int tosm1, int tos) {
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int arg1, arg2;
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int result;
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N_GETNUMBER(tosm1, arg1, doufn);
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N_GETNUMBER(tos, arg2, doufn);
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#ifdef USE_OVERFLOW_BUILTINS
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if (__builtin_smul_overflow(arg1, arg2, &result)) {
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goto doufn2;
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}
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N_ARITH_SWITCH(result);
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#else
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result = arg1 * arg2;
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if ((arg2 != 0) && ((result / arg2) != arg1)) goto doufn2;
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N_ARITH_SWITCH(result);
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#endif
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doufn2:
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ERROR_EXIT(tos);
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doufn:
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return (N_OP_ftimes2(tosm1, tos));
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} /* end N_OP_times2 */
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LispPTR N_OP_itimes2(int tosm1, int tos) {
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int arg1, arg2;
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int result;
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N_IGETNUMBER(tosm1, arg1, doufn);
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N_IGETNUMBER(tos, arg2, doufn);
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#ifdef USE_OVERFLOW_BUILTINS
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if (__builtin_smul_overflow(arg1, arg2, &result)) {
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goto doufn;
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}
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N_ARITH_SWITCH(result);
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#else
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/* UB: signed integer overflow: 1073741824 * 32768 cannot be represented in type 'int' */
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result = arg1 * arg2;
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if ((arg2 != 0) && ((result / arg2) != arg1)) { goto doufn; }
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N_ARITH_SWITCH(result);
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#endif
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doufn:
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ERROR_EXIT(tos);
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} /* end N_OP_itimes2 */
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/**********************************************************************/
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/*
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Func name : N_OP_quot(iquot)
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*/
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/**********************************************************************/
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LispPTR N_OP_quot(int tosm1, int tos) {
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int arg1, arg2;
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int result;
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N_GETNUMBER(tosm1, arg1, doufn);
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N_GETNUMBER(tos, arg2, doufn);
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if (arg2 == 0) goto doufn2;
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result = arg1 / arg2; /* lmm: note: no error case!! */
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N_ARITH_SWITCH(result);
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doufn2:
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ERROR_EXIT(tos);
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doufn:
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return (N_OP_fquotient(tosm1, tos));
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} /* end N_OP_quot */
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LispPTR N_OP_iquot(int tosm1, int tos) {
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register int arg1, arg2;
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register int result;
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N_IGETNUMBER(tosm1, arg1, doufn);
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N_IGETNUMBER(tos, arg2, doufn);
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if (arg2 == 0) goto doufn;
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result = arg1 / arg2;
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N_ARITH_SWITCH(result);
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doufn:
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ERROR_EXIT(tos);
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} /* end N_OP_quot */
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/**********************************************************************/
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/*
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Func name : N_OP_iremainder
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*/
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/**********************************************************************/
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LispPTR N_OP_iremainder(int tosm1, int tos) {
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register int arg1, arg2;
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register int result;
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N_IGETNUMBER(tosm1, arg1, doufn);
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N_IGETNUMBER(tos, arg2, doufn);
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if (arg2 == 0) goto doufn;
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result = arg1 % arg2;
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N_ARITH_SWITCH(result);
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doufn:
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ERROR_EXIT(tos);
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} /* end N_OP_iremainder */
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