C Tutorial/math.h/copysign

copysign

Item Value Header file math.h Declaration float copysignf(float val, float signval);double copysign(double val, double signval);long double copysignl(long double val, long double signval); Function gives val the same sign as signval, and return the result.

#include <math.h>
  #include <stdio.h>
  int main(void)
  {
    printf("%f", copysignf(1.0, -2.0));
   
  }