| COPYSIGN(3) | Library Functions Manual | COPYSIGN(3) | 
copysign, copysignf,
  copysignl —
#include <math.h>
double
  
  copysign(double
    x, double y);
float
  
  copysignf(float
    x, float y);
long double
  
  copysignl(long
    double x, long double
    y);
#include
    <tgmath.h>
real-floating
  
  copysign(real-floating
    x, real-floating
    y);
copysign(), copysignf(), and
  copysignl() functions return a value whose absolute
  value matches x, but whose sign bit is taken from
  y.
| September 28, 2017 | NetBSD 10.0 |