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Function std.math.operations.nextUp
Calculate the next largest floating point value after x.
real nextUp
(
real x
) pure nothrow @nogc @trusted;
double nextUp
(
double x
) pure nothrow @nogc @trusted;
float nextUp
(
float x
) pure nothrow @nogc @trusted;
Return the least number greater than x that is representable as a real; thus, it gives the next point on the IEEE number line.
x | nextUp(x) |
---|---|
-∞ | -real.max |
±0.0 | real.min_normal*real.epsilon |
real.max | ∞ |
∞ | ∞ |
NAN | NAN |
Example
assert(nextUp(1.0 - 1.0e-6) .feqrel(0.999999) > 16);
assert(nextUp(1.0 - real .epsilon) .feqrel(1.0) > 16);
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.