NAME

	frexp, ldexp, modf – split into mantissa and exponent

SYNOPSIS

	#include <u.h> #include <libc.h> double frexp(double value, int *eptr) double ldexp(double value, int exp) double modf(double value, double *iptr)

DESCRIPTION

	Frexp returns the mantissa of value and stores the exponent indirectly through eptr, so that value = frexp(value)x2(*eptr) Ldexp returns the quantity valuex2exp. Modf returns the signed fractional part of value and stores the integer part indirectly through iptr.

SOURCE

	/sys/src/libc/port/frexp.c

SEE ALSO

	intro(2)

DIAGNOSTICS

	Ldexp returns 0 for underflow and the appropriately signed infinity for overflow.