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Function std.math.remainder.fmod

Calculates the remainder from the calculation x/y.

real fmod (
  real x,
  real y
) nothrow @nogc @trusted;


The value of x - i * y, where i is the number of times that y can be completely subtracted from x. The result has the same sign as x.

Special Values
x y fmod(x, y) invalid?
±0.0 not 0.0 ±0.0 no
±∞ anything NAN yes
anything ±0.0 NAN yes
!=±∞ ±∞ x no


import std.math.operations : feqrel;
import std.math.traits : isIdentical, isNaN;

assert(isIdentical(fmod(0.0, 1.0), 0.0));
assert(fmod(5.0, 3.0).feqrel(2.0) > 16);
assert(isNaN(fmod(5.0, 0.0)));


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


Boost License 1.0.