int signbit(fpval): Returns nonzero if fpval is negative (that is, its sign bit is set) : signbit « math.h « C / ANSI-C

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C / ANSI-C » math.h » signbit

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int signbit(fpval): Returns nonzero if fpval is negative (that is, its sign bit is set)





  



#include <stdio.h>

#include <math.h>



int main(void)

{

  printf("signbit(-1.0) %d\n", signbit(-1.0));

  printf("signbit(1.0) %d\n", signbit(1.0));

  printf("signbit(0.0) %d\n", signbit(0.0));

  return 0;

}



         

/*

signbit(-1.0) 512

signbit(1.0) 0

signbit(0.0) 0        

*/

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