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Name
frexp - convert floating-point number to fractional
and integral components
Synopsis
#include <math.h>
double frexp(double x, int *exp);
Description
The frexp() function is used
to split the number x into a normalized fraction and an exponent which
is stored in exp.
Return Value
The frexp() function returns the normalized
fraction. If the argument x is not zero, the normalized fraction is x times
a power of two, and is always in the range 1/2 (inclusive) to 1 (exclusive).
If x is zero, then the normalized fraction is zero and zero is stored
in exp.
Conforming to
SVID 3, POSIX, BSD 4.3, ISO 9899
See Also
ldexp(3)
, modf(3)
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