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Function std.complex.log10
Calculate the base-10 logarithm of x.
Parameters
Name | Description |
---|---|
x | A complex number |
Returns
The complex base 10 logarithm of x
Example
import core .math : sqrt;
import std .math .constants : LN10, PI;
import std .math .operations : isClose;
auto a = complex(2.0, 1.0);
writeln(log10(a)); // log(a) / log(complex(10.0))
auto b = log10(complex(0.0, 1.0)) * 2.0;
auto c = log10(complex(sqrt(2.0) / 2, sqrt(2.0) / 2)) * 4.0;
assert(isClose(b, c, 0.0, 1e-15));
assert(ceqrel(log10(complex(-100.0L, 0.0L)), complex(2.0L, PI / LN10)) >= real .mant_dig - 1);
assert(ceqrel(log10(complex(-100.0L, -0.0L)), complex(2.0L, -PI / LN10)) >= real .mant_dig - 1);
Authors
Lars Tandle Kyllingstad, Don Clugston
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.