/D

# core.math

Builtin mathematical intrinsics

Source
core/math.d
Authors:
Walter Bright, Don Clugston
pure nothrow @nogc @safe real cos(real x)

Returns cosine of `x`. `x` is in radians.

Special Values
`x` `cos`(`x`) invalid?
NAN NAN yes
±∞ NAN yes
Bugs:
Results are undefined if |`x`| >= 264.
pure nothrow @nogc @safe real sin(real x)

Returns sine of `x`. `x` is in radians.

Special Values
`x` `sin`(`x`) invalid?
NAN NAN yes
±0.0 ±0.0 no
±∞ NAN yes
Bugs:
Results are undefined if |`x`| >= 264.
pure nothrow @nogc @safe long rndtol(real 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.

@nogc real rndtonl(real x)

Returns `x` rounded to a long value using the FE_TONEAREST rounding mode. If the integer value of `x` is greater than long.max, the result is indeterminate.

pure nothrow @nogc @safe float sqrt(float x)

Compute square root of `x`.

Special Values
`x` `sqrt`(`x`) invalid?
-0.0 -0.0 no
<0.0 NAN yes
+∞ +∞ no
pure nothrow @nogc @safe double sqrt(double x)

ditto

Compute square root of `x`.

Special Values
`x` `sqrt`(`x`) invalid?
-0.0 -0.0 no
<0.0 NAN yes
+∞ +∞ no
pure nothrow @nogc @safe real sqrt(real x)

ditto

Compute square root of `x`.

Special Values
`x` `sqrt`(`x`) invalid?
-0.0 -0.0 no
<0.0 NAN yes
+∞ +∞ no
pure nothrow @nogc @safe real ldexp(real n, int exp)

Compute `n` * 2`exp`

References
frexp
pure nothrow @nogc @safe real fabs(real x)

Returns |`x`|

Special Values
`x` `fabs`(`x`)
±0.0 +0.0
±∞ +∞
pure nothrow @nogc @safe real rint(real x)

Rounds `x` to the nearest integer value, using the current rounding mode. 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.

pure nothrow @nogc @safe real yl2x(real x, real y)

Building block functions, they translate to a single x87 instruction.

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