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Function `std.math.ldexp`

Compute n * 2^exp


						
				real ldexp
				(
				

				  real n,
				

				  int exp
				

				) pure nothrow @nogc @safe;
				

				

				double ldexp
				(
				

				  double n,
				

				  int exp
				

				) pure nothrow @nogc @safe;
				

				

				float ldexp
				(
				

				  float n,
				

				  int exp
				

				) pure nothrow @nogc @safe;

References

frexp

Example

import std.meta : AliasSeq;
static foreach (T; AliasSeq!(float, double, real))
{{
    T r;

    r = ldexp(3.0L, 3);
    writeln(r); // 24

    r = ldexp(cast(T) 3.0, cast(int) 3);
    writeln(r); // 24

    T n = 3.0;
    int exp = 3;
    r = ldexp(n, exp);
    writeln(r); // 24
}}

Authors

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

License

Boost License 1.0.