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Function std.math.rounding.rint
Rounds x to the nearest integer value, using the current rounding mode.
real rint
(
real x
) pure nothrow @nogc @safe;
double rint
(
double x
) pure nothrow @nogc @safe;
float rint
(
float x
) pure nothrow @nogc @safe;
If the return value is not equal to x, the FE_INEXACT exception is raised.
nearbyint
performs the same operation, but does
not set the FE_INEXACT exception.
Example
import std .math .traits : isNaN;
version (IeeeFlagsSupport) resetIeeeFlags();
writeln(rint(0.4)); // 0
version (IeeeFlagsSupport) assert(ieeeFlags .inexact);
writeln(rint(0.5)); // 0
writeln(rint(0.6)); // 1
writeln(rint(100.0)); // 100
assert(isNaN(rint(real .nan)));
writeln(rint(real .infinity)); // real.infinity
writeln(rint(-real .infinity)); // -real.infinity
Authors
Walter Bright, Don Clugston, Conversion of CEPHES math library to D by Iain Buclaw and David Nadlinger
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.