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Function std.math.exponential.log2
Calculates the base-2 logarithm of x: ⊂x
real log2
(
real x
) pure nothrow @nogc @safe;
x | log2(x) | divide by 0? | invalid? |
---|---|---|---|
±0.0 | -∞ | yes | no |
<0.0 | NAN | no | yes |
+∞ | +∞ | no | no |
Example
import std .math .operations : isClose;
assert(isClose(log2(1024.0L), 10));
Authors
Walter Bright, Don Clugston, Conversion of CEPHES math library to D by Iain Buclaw and David Nadlinger
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.