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// ----------------------------------------------------------------------------
// Copyright (c) 2014, Nicolas P. Rougier. All Rights Reserved.
// Distributed under the (new) BSD License.
// ----------------------------------------------------------------------------
#ifndef _CONSTANTS_
#define _CONSTANTS_
// The base of natural logarithms (e)
const float M_E = 2.71828182845904523536028747135266250;
// The logarithm to base 2 of M_E (log2(e))
const float M_LOG2E = 1.44269504088896340735992468100189214;
// The logarithm to base 10 of M_E (log10(e))
const float M_LOG10E = 0.434294481903251827651128918916605082;
// The natural logarithm of 2 (loge(2))
const float M_LN2 = 0.693147180559945309417232121458176568;
// The natural logarithm of 10 (loge(10))
const float M_LN10 = 2.30258509299404568401799145468436421;
// Pi, the ratio of a circle's circumference to its diameter.
const float M_PI = 3.14159265358979323846264338327950288;
// Pi divided by two (pi/2)
const float M_PI_2 = 1.57079632679489661923132169163975144;
// Pi divided by four (pi/4)
const float M_PI_4 = 0.785398163397448309615660845819875721;
// The reciprocal of pi (1/pi)
const float M_1_PI = 0.318309886183790671537767526745028724;
// Two times the reciprocal of pi (2/pi)
const float M_2_PI = 0.636619772367581343075535053490057448;
// Two times the reciprocal of the square root of pi (2/sqrt(pi))
const float M_2_SQRTPI = 1.12837916709551257389615890312154517;
// The square root of two (sqrt(2))
const float M_SQRT2 = 1.41421356237309504880168872420969808;
// The reciprocal of the square root of two (1/sqrt(2))
const float M_SQRT1_2 = 0.707106781186547524400844362104849039;
#endif
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