56 lines
932 B
C
56 lines
932 B
C
/*
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abCOpLog.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/abCOpLog.h"
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#define LOG_NAME "LOG"
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static void logExecute(void);
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void abCalcOpLogInit(void)
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{
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abCalcOpRegister(LOG_NAME, logExecute);
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}
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void logExecute(void)
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{
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abCalcExpr result;
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AB_CALC_OP_ONE_ARG(LOG_NAME);
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if (expr->type != abCalcExprTypeReal) {
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abCalcRaiseError(abCalcBadArgTypeError, LOG_NAME);
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return;
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}
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if (expr->u.real == 0.0) {
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abCalcRaiseError(abCalcInfiniteResultError, LOG_NAME);
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return;
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}
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if (expr->u.real < 0.0) {
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abCalcRaiseError(abCalcComplexResultError, LOG_NAME);
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return;
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}
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abCalcExprRealSet(&result, log10(expr->u.real));
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abCalcStackExprPop(NULL);
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abCalcStackExprPush(&result);
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}
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