#include <math.h>int ilogbf(float num);int ilogb(double num); int ilogbl(long double num); 

ilogb( ), ilogbf( ), and ilogbl( ) were added by C99.

The ilogb( ) family of functions returns the exponent of num. This value is returned as an int value.

A related function is logb( ).

C(s)C++ Programmer's Reference
C Programming on the IBM PC (C Programmers Reference Guide Series)
ISBN: 0673462897
EAN: 2147483647
Year: 2002
Pages: 539

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