scalbn

Efficiently calculates x * 2ⁿ.

scalbn handles underflow and overflow in the same fashion as the basic arithmetic operators.

Special Values
x	scalb(x)
$(PLUSMNINF)	$(PLUSMNINF)
±0.0	±0.0

@safe pure nothrow @nogc

real

scalbn

(

real x

int n

)

Examples

assert(scalbn(0x1.2345678abcdefp0, 999) == 0x1.2345678abcdefp999);
assert(scalbn(-real.infinity, 5) == -real.infinity);