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# core.math

Builtin mathematical intrinsics

Source core/math.d

License:
Boost License 1.0.
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 * 2exp

  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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