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Module `std.math.rounding`

This is a submodule of std.math.

It contains several functions for rounding floating point numbers.

Functions

Name	Description
`ceil(x)`	Returns the value of x rounded upward to the next integer (toward positive infinity).
`floor(x)`	Returns the value of x rounded downward to the next integer (toward negative infinity).
`lrint(x)`	Rounds x to the nearest integer value, using the current rounding mode.
`lround(x)`	Return the value of x rounded to the nearest integer.
`nearbyint(x)`	Rounds x to the nearest integer value, using the current rounding mode.
`quantize(val, unit)`	Round `val` to a multiple of `unit`. `rfunc` specifies the rounding function to use; by default this is `rint`, which uses the current rounding mode.
`quantize(val, exp)`	Round `val` to a multiple of `pow(base, exp)`. `rfunc` specifies the rounding function to use; by default this is `rint`, which uses the current rounding mode.
`rint(x)`	Rounds x to the nearest integer value, using the current rounding mode.
`rndtol(x)`	Returns x rounded to a long value using the current rounding mode. If the integer value of x is greater than long.max, the result is indeterminate.
`round(x)`	Return the value of x rounded to the nearest integer. If the fractional part of x is exactly 0.5, the return value is rounded away from zero.
`trunc(x)`	Returns the integer portion of x, dropping the fractional portion. This is also known as "chop" rounding. `pure` on all platforms.

Authors

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

License

Boost License 1.0.