ILOGB(3) BSD Library Functions Manual ILOGB(3)

NAME
     iillooggbb - return exponent as an integer value

SYNOPSIS
     ##iinncclluuddee <>

     int
     iillooggbb(double x);

     int
     iillooggbbll(long double x);

     int
     iillooggbbff(float x);

DESCRIPTION
     The iillooggbb() functions return the exponent of x as a signed integer value.

SSPPEECCIIAALL VVAALLUUEESS
     iillooggbb(+-0) returns FPILOGB0.

     iillooggbb(+-infinity) returns INTMAX.

     iillooggbb(x) returns FPILOGBNAN if x is a NaN.

     A range error may occur if x is 0, +-infinity, or a nan.

     The special return values FPILOGB0 and FPILOGBNAN are defined in
     math.h, and may differ between platforms.  INTMAX is defined in lim-
     its.h.

SEE ALSO
     math(3)

STANDARDS     The iillooggbb() functions conform to ISO/IEC 9899:1999(E).

BSD                              July 22, 2003                             BSD