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# std.math.constants

This is a submodule of std.math.
It contains several useful mathematical constants.
License:
Boost License 1.0.
Authors:
Walter Bright, Don Clugston

Source std/math/constants.d

enum real `E`;
  e = 2.718281...
enum real `LOG2T`;
  log210 = 3.321928...
enum real `LOG2E`;
  log2e = 1.442695...
enum real `LOG2`;
  log102 = 0.301029...
enum real `LOG10E`;
  log10e = 0.434294...
enum real `LN2`;
  ln 2 = 0.693147...
enum real `LN10`;
  ln 10 = 2.302585...
enum real `PI`;
  π = 3.141592...
enum real `PI_2`;
  π / 2 = 1.570796...
enum real `PI_4`;
  π / 4 = 0.785398...
enum real `M_1_PI`;
  1 / π = 0.318309...
enum real `M_2_PI`;
  2 / π = 0.636619...
enum real `M_2_SQRTPI`;
  2 / √π = 1.128379...
enum real `SQRT2`;
  √2 = 1.414213...
enum real `SQRT1_2`;
  √½ = 0.707106...

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