FREXP man page on 4.4BSD

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

NAME
frexp — convert floating-point number to fractional and integral compo‐
nents

SYNOPSIS
#include <math.h>

double
frexp(double value, int *exp);

DESCRIPTION
The frexp() function breaks a floating-point number into a normalized
fraction and an integral power of 2.  It stores the integer in the int
object pointed to by exp.

RETURN VALUES
The frexp() function returns the value x, such that x is a double with
magnitude in the interval [1/2, 1] or zero, and value equals x times 2
raised to the power *exp.	If value is zero, both parts of the result are
zero.

ldexp(3), modf(3), math(3)

STANDARDS
The frexp() function conforms to ANSI X3.159-1989 (“ANSI C89”).

BSD				 June 4, 1993				   BSD
```
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