Проект OpenNet: MAN fabs (3) Библиотечные вызовы (FreeBSD и Linux)

fabs (3)

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NAME

fabs, fabsf, fabsl - absolute value function

c99 [ flag... ] file... -lm [ library... ]
#include <math.h>

double fabs(double x);

float fabsf(float x);

long double fabsl(long double x);

These functions compute the absolute value of x, |x|.

Upon successful completion, these functions return the absolute value of x.

If x is NaN, a NaN is returned.

If x is ±0, +0 is returned.

If x is ±Inf, +Inf is returned.

No errors are defined.

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE

Interface Stability Standard

MT-Level

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