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Function std.math.exp2

Calculates 2x.

x exp2(x) +∞ +∞ -∞ +0.0

Prototype

real exp2(
  real x
) pure nothrow @nogc @trusted;

Example

assert(feqrel(exp2(0.5L), SQRT2) >= real.mant_dig -1);
assert(exp2(8.0L) == 256.0);
assert(exp2(-9.0L)== 1.0L/512.0);

Authors

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

License

Boost License 1.0.

Comments