85 lines
1.4 KiB
C
85 lines
1.4 KiB
C
/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#include <u.h>
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#include <lib9.h>
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#include "hoc.h"
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double errcheck(double, char*);
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double
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Log(double x)
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{
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return errcheck(log(x), "log");
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}
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double
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Log10(double x)
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{
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return errcheck(log10(x), "log10");
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}
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double
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Sqrt(double x)
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{
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return errcheck(sqrt(x), "sqrt");
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}
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double
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Exp(double x)
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{
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return errcheck(exp(x), "exp");
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}
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double
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Asin(double x)
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{
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return errcheck(asin(x), "asin");
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}
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double
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Acos(double x)
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{
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return errcheck(acos(x), "acos");
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}
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double
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Sinh(double x)
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{
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return errcheck(sinh(x), "sinh");
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}
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double
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Cosh(double x)
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{
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return errcheck(cosh(x), "cosh");
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}
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double
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Pow(double x, double y)
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{
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return errcheck(pow(x,y), "exponentiation");
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}
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double
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integer(double x)
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{
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if(x<-2147483648.0 || x>2147483647.0)
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execerror("argument out of domain", 0);
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return (double)(int32_t)x;
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}
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double
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errcheck(double d, char* s) /* check result of library call */
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{
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if(isNaN(d))
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execerror(s, "argument out of domain");
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if(isInf(d, 0))
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execerror(s, "result out of range");
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return d;
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}
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