std::frexp

Defined in header `<cmath>`

float frexp( float x, int *exp );

double frexp( double x, int *exp );

long double frexp( long double x, int *exp );

Decomposes given floating point value to significand and exponent.

`arg`	-	floating point value
`exp`	-	pointer to integer value to store the exponent to

significand of the given floating point number in the range of [0.5; 1). The exponent is put into integer value pointed to by exp.

multiplies a number by 2 raised to a power
(function)

decomposes a number into integer and fractional parts
(function)