| ISINFF(3) | Library Functions Manual | ISINFF(3) | 
isinff, isnanf —
#include <math.h>
int
  
  isinff(float);
int
  
  isnanf(float);
isinff() function returns 1 if the number is
  “infinity”, otherwise 0.
The isnanf() function returns 1 if the
    number is “not-a-number”, otherwise 0.
IEEE Standard for Binary Floating-Point Arithmetic, Std 754-1985, ANSI.
| August 16, 1999 | NetBSD 9.3 |