44 lines
1.3 KiB
Plaintext
44 lines
1.3 KiB
Plaintext
// Mathematical and physical constants
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`ifdef CONSTANTS_VAMS
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`else
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`define CONSTANTS_VAMS 1
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// M_ is a mathematical constant
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`define M_E 2.7182818284590452354
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`define M_LOG2E 1.4426950408889634074
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`define M_LOG10E 0.43429448190325182765
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`define M_LN2 0.69314718055994530942
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`define M_LN10 2.30258509299404568402
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`define M_PI 3.14159265358979323846
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`define M_TWO_PI 6.28318530717958647693
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`define M_PI_2 1.57079632679489661923
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`define M_PI_4 0.78539816339744830962
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`define M_1_PI 0.31830988618379067154
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`define M_2_PI 0.63661977236758134308
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`define M_2_SQRTPI 1.12837916709551257390
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`define M_SQRT2 1.41421356237309504880
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`define M_SQRT1_2 0.70710678118654752440
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/*
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* Do we need these? For now they are not available.
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*
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// The following constants have been taken from http://physics.nist.gov
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// P_ is a physical constant
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// charge of electron in coulombs
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`define P_Q 1.602176462e-19
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// speed of light in vacuum in meters/sec
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`define P_C 2.99792458e8
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// Boltzmann's constant in joules/kelvin
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`define P_K 1.3806503e-23
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// Planck's constant in joules*sec
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`define P_H 6.62606876e-34
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// permittivity of vacuum in farads/meter
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`define P_EPS0 8.854187817e-12
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// permeability of vacuum in henrys/meter
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`define P_U0 (4.0e-7 * `M_PI)
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// zero celsius in kelvin
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`define P_CELSIUS0 273.15
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*/
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`endif
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