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Function std.math.operations.fma

Returns (x * y) + z, rounding only once according to the current rounding mode.

real fma (
  real x,
  real y,
  real z
) pure nothrow @nogc @safe;


Not currently implemented - rounds twice.


writeln(fma(0.0, 2.0, 2.0)); // 2.0
writeln(fma(2.0, 2.0, 2.0)); // 6.0
writeln(fma(real.infinity, 2.0, 2.0)); // real.infinity
assert(fma(real.nan, 2.0, 2.0) is real.nan);
assert(fma(2.0, 2.0, real.nan) is real.nan);


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


Boost License 1.0.