ILOGB(3) BSD Library Functions Manual ILOGB(3)NAMEilogb — return exponent as an integer value
SYNOPSIS
#include <math.h>
int
ilogb(double x);
int
ilogbf(float x);
DESCRIPTION
The ilogb() and ilogbf() functions return the exponent of x as a signed
integer value.
SPECIAL VALUES
ilogb(�0) returns - INT_MAX.
ilogb(�infinity) returns INT_MAX.
ilogb(x) returns INT_MAX if x is a NaN.
A range error may occur if x is 0.
SEE ALSOmath(3)STANDARDS
The ilogb() and ilogbf() functions conform to ISO/IEC 9899:1999(E).
BSD July 22, 2003 BSD