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Function std.math.remainder.modf

Breaks x into an integral part and a fractional part, each of which has the same sign as x. The integral part is stored in i.

real modf (
  real x,
  ref real i
) nothrow @nogc @trusted;


The fractional part of x.

Special Values
x i (on input) modf(x, i) i (on return)
±∞ anything ±0.0 ±∞


import std.math.operations : feqrel;

real frac;
real intpart;

frac = modf(3.14159, intpart);
assert(intpart.feqrel(3.0) > 16);
assert(frac.feqrel(0.14159) > 16);


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


Boost License 1.0.