| FABS(3) | Library Functions Manual | FABS(3) | 
fabs, fabsf,
  fabsl —
#include <math.h>
double
  
  fabs(double
    x);
float
  
  fabsf(float
    x);
long double
  
  fabsl(long
    double x);
fabs(), fabsf() and
  fabsl() functions compute the absolute value of a
  floating-point number x.
fabs() family return the absolute value
  of x.
fabs() function conforms to ANSI
  X3.159-1989 (“ANSI C89”). The
  fabsf() and fabsl() functions
  conform to ISO/IEC 9899:1999
  (“ISO C99”).
| March 17, 2016 | NetBSD 9.3 |