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Function `std.math.exp2`

Calculates 2^x.


						
				real exp2
				(
				

				  real x
				

				) pure nothrow @nogc @trusted;
				

				

				double exp2
				(
				

				  double x
				

				) pure nothrow @nogc @safe;
				

				

				float exp2
				(
				

				  float x
				

				) pure nothrow @nogc @safe;

Special Values
x	exp2(x)
+∞	+∞
-∞	+0.0
NAN	NAN

Example

assert(isIdentical(exp2(0.0), 1.0));
assert(exp2(2.0).feqrel(4.0) > 16);
assert(exp2(8.0).feqrel(256.0) > 16);

Authors

Walter Bright, Don Clugston, Conversion of CEPHES math library to D by Iain Buclaw and David Nadlinger

License

Boost License 1.0.