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Function `std.complex.expi`


						
				Complex!(real) expi
				(
				

				  real y
				

				) pure nothrow @nogc @trusted;

Parameters

Name	Description
y	A real number.

Returns

The value of cos(y) + i sin(y).

Note

expi is included here for convenience and for easy migration of code that uses std.math.expi. Unlike std.math.expi, which uses the x87 fsincos instruction when possible, this function is no faster than calculating cos(y) and sin(y) separately.

Example

import std.math : cos, sin;
writeln(expi(0.0L)); // 1.0L
writeln(expi(1.3e5L)); // complex(cos(1.3e5L), sin(1.3e5L))

Authors

Lars Tandle Kyllingstad, Don Clugston

License

Boost License 1.0