53 lines
862 B
C
53 lines
862 B
C
/*
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abCOpAcos.c
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By: Jeremy Rand
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*/
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#include <math.h>
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#include <stdio.h>
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#include "abCError.h"
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#include "abCStack.h"
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#include "expr/abCExpr.h"
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#include "expr/abCExpReal.h"
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#include "ops/abCOp.h"
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#include "ops/abCOpAcos.h"
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#define ACOS_NAME "ACOS"
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static void acosExecute(void);
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void abCalcOpAcosInit(void)
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{
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abCalcOpRegister(ACOS_NAME, acosExecute);
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}
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void acosExecute(void)
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{
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abCalcExpr result;
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AB_CALC_OP_ONE_ARG(ACOS_NAME);
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if (expr->type != abCalcExprTypeReal) {
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abCalcRaiseError(abCalcBadArgTypeError, ACOS_NAME);
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return;
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}
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if ((expr->u.real < -1.0) ||
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(expr->u.real > 1.0)) {
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abCalcRaiseError(abCalcComplexResultError, ACOS_NAME);
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return;
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}
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abCalcExprRealSet(&result, acos(expr->u.real));
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abCalcStackExprPop(NULL);
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abCalcStackExprPush(&result);
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}
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