fabsf(3) - Linux man page

Name

fabs, fabsf, fabsl - absolute value of floating-point number

Synopsis

#include <math.h>
double fabs(double x);
float fabsf(float x);
long double fabsl(long double x);

Link with -lm.

Description

The fabs() functions return the absolute value of the floating-point number x.

Errors

No errors can occur.

Conforming to

The fabs() function conforms to SVr4, POSIX.1-2001, 4.3BSD, C89. The other functions are from C99.

See Also

abs(3), ceil(3), cabs(3), floor(3), labs(3), rint(3)