Display the source code in std/math/traits.d from which this page was generated on github.

If you spot a problem with this page, click here to create a Bugzilla issue.

Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using local clone.

Module `std.math.traits`

This is a submodule of std.math.

It contains several functions for introspection on numerical values.

Functions

Name	Description
`copysign(to, from)`
`isFinite(x)`	Determines if x is finite.
`isIdentical(x, y)`	Is the binary representation of x identical to y?
`isInfinity(x)`	Determines if x is ±∞.
`isNaN(x)`	Determines if x is NaN.
`isNormal(x)`	Determines if x is normalized.
`isPowerOf2(x)`	Check whether a number is an integer power of two.
`isSubnormal(x)`	Determines if x is subnormal.
`sgn(x)`	Returns `-1` if `x < 0`, `x` if `x == 0`, `1` if `x > 0`, and NAN if x==NAN.
`signbit(x)`	Return 1 if sign bit of e is set, 0 if not.

Authors

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

License

Boost License 1.0.