ldexp

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ldexp
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Macro constants
 
Defined in header <math.h>
float       ldexpf( float arg, int exp );
(since C99)
double      ldexp( double arg, int exp );
long double ldexpl( long double arg, int exp );
(since C99)

Multiplies an floating point value arg by 2 raised to power exp.

[edit] Parameters

arg - floating point value
exp - integer value

[edit] Return value

Returns x×2exp

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

[edit] See also

decomposes a number into significand and a power of 2
(function)
(C99)
(C99)
multiplies a number by FLT_RADIX raised to a power
(function)