#define HUGE_VALF /*implementation defined*/
(since C99)#define HUGE_VAL /*implementation defined*/
#define HUGE_VALL /*implementation defined*/
(since C99)The HUGE_VALF, HUGE_VAL and HUGE_VALL macros expand to positive floating-point constant expressions which compare equal to the values returned by floating-point functions and operators in case of overflow (see math_errhandling).
HUGE_VALF Expands to positive float expression that indicates overflow HUGE_VAL Expands to positive double expression that indicates overflow, not necessarily representable as a float HUGE_VALL Expands to positive long double expression that indicates overflow, not necessarily representable as a float or double
On implementations that support floating-point infinities, these macros always expand to the positive infinities of float, double, and long double, respectively.
[edit] Example#include <math.h>
#include <stdio.h>
int main(void)
{
const double result = 1.0 / 0.0;
printf("1.0/0.0 == %f\n", result);
if (result == HUGE_VAL)
puts("1.0/0.0 == HUGE_VAL");
}
Possible output:
1.0/0.0 == inf 1.0/0.0 == HUGE_VAL[edit] References
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