Mathematical Constants

The library ensures that the standard BSD mathematical constants are defined. For reference here is a list of the constants.

M_E

The base of exponentials, @math{e}

M_LOG2E

The base-2 logarithm of @math{e}, @math{\log_2 (e)}

M_LOG10E

The base-10 logarithm of @math{e}, @c{$\log_{10}(e)$} @math{\log_10 (e)}

M_SQRT2

The square root of two, @math{\sqrt 2}

M_SQRT1_2

The square root of one-half, @c{$\sqrt{1/2}$} @math{\sqrt{1/2}}

M_SQRT3

The square root of three, @math{\sqrt 3}

M_PI

The constant pi, @math{\pi}

M_PI_2

Pi divided by two, @math{\pi/2}

M_PI_4

Pi divided by four, @math{\pi/4}

M_SQRTPI

The square root of pi, @math{\sqrt\pi}

M_2_SQRTPI

Two divided by the square root of pi, @math{2/\sqrt\pi}

M_1_PI

The reciprocal of pi, @math{1/\pi}

M_2_PI

Twice the reciprocal of pi, @math{2/\pi}

M_LN10

The natural logarithm of ten, @math{\ln(10)}

M_LN2

The natural logarithm of two, @math{\ln(2)}

M_LNPI

The natural logarithm of pi, @math{\ln(\pi)}

M_EULER

Euler's constant, @math{\gamma}