frexpf man page on OpenDarwin

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FREXP(3)		 BSD Library Functions Manual		      FREXP(3)

NAME
     frexp — break floating-point number into normalized fraction and power of
     2

SYNOPSIS
     #include <math.h>

     double
     frexp(double value, int *exp);

     float
     frexpf(float value, int *exp);

DESCRIPTION
     The frexp() and frexpf() functions break the floating-point number value
     into a normalized fraction and an integral power of 2. They store the
     integer in the int object pointed to by exp.

     The functions return a number x such that x has a magnitude in the inter‐
     val [1/2, 1) or 0, and value = x*(2**exp).

SPECIAL VALUES
     frexp(�0, exp) returns �0, and stores 0 in the object pointed to by exp.

     frexp(�infinity, exp) returns �infinity, and stores an unspecified value
     in the object pointed to by exp.

     frexp(Nan, exp) returns a Nan, and stores an unspecified value in the
     object pointed to by exp.

SEE ALSO
     math(3), scalbn

STANDARDS
     The frexp() and frexpf() functions conform to ISO/IEC 9899:1999(E).

BSD			       January 30, 2003				   BSD
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