scalbn, scalbln

Defined in header `<cmath>`

float scalbnf( float x, int exp );		(since C99)

double scalbn( double x, int exp );		(since C99)

long double scalbnl( long double x, int exp );		(since C99)

float scalblnf( float x, long exp );		(since C99)

double scalbln( double x, long exp );		(since C99)

long double scalblnl( long double x, long exp );		(since C99)

Multiplies an floating point value x by FLT_RADIX raised to power exp. On binary system it is equivalent to ldexp().

arg	-	floating point value
exp	-	integer value

Returns x×FLT_RADIX^exp.

If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.


frexp	decomposes a number into significand and a power of 2 (function) [edit]

ldexp	multiplies a number by 2 raised to a power (function) [edit]

C++ documentation for scalbn

Common mathematical functions
Floating-point environment
Complex number arithmetics
Random number generation
Type-generic math