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added check for Nan

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This commit is contained in:
ceriel 1991-03-19 16:51:28 +00:00
parent e27071de78
commit 7e8422d810
1 changed files with 2 additions and 0 deletions
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lang/cem/libcc.ansi/headers/math.h
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@ -9,6 +9,8 @@
double __huge_val(void); /* may be infinity */ double __huge_val(void); /* may be infinity */
#define HUGE_VAL (__huge_val()) #define HUGE_VAL (__huge_val())
int __IsNan(double d); /* test for Not A Number */
double acos(double _x); double acos(double _x);
double asin(double _x); double asin(double _x);
double atan(double _x); double atan(double _x);