Gsl (gb.gsl)

This class provides useful mathematical functions and constants.

Constants

E	The base of exponentials, e = Exp(1).
EULER	Euler’s constant, γ.
INV2_PI	Twice the reciprocal of pi, 2/π = 2 / Pi.
INV2_SQRTPI	Two divided by the square root of pi, 2/√π = 2 / Sqr(Pi).
INV_PI	The reciprocal of pi, 1/π = 1 / Pi.
LN10	The natural logarithm of ten, ln(10) = Log(10).
LN2	The natural logarithm of two, ln(2) = Log(2).
LNPI	The natural logarithm of pi, ln(π) = Log(Pi).
LOG10E	The base-10 logarithm of e, log10(e) = Log10(Exp(1)).
LOG2E	The base-2 logarithm of e, log2(e) = Log2(Exp(1)).
PI	The constant pi, π = Pi.
PI_2
PI_4
SQRT1_2	The square root of one-half, √ 1/2 = Sqr(0.5).
SQRT2	The square root of two, √2 = Sqr(2).
SQRT3	The square root of three, √3 = Sqr(3).
SQRTPI	The square root of π, √/π/ = Sqr(Pi).

Static methods

Acosh	This function computes the value of arccosh(x).
Asinh	This function computes the value of arcsinh(x).
Atanh	This function computes the value of arctanh(x).
Expm1	This function computes the value of exp(x) − 1 in a way that is accurate for small x.
Fcmp	This function determines whether X and Y are approximately equal to a relative accuracy epsilon E.
Frexp	This function splits the number X into its normalized fraction F and exponent E, such that X = F * (2 ^ E) and 0.5 < F < 1.
Hypot	This function computes the value of √( x ² + y ²) in a way that avoids overflow.
Hypot3	This function computes the value of √( x ² + y ² + z ²) in a way that avoids overflow.
IsFinite	This function returns TRUE if X is a real number, and FALSE if it is infinite or not-a-number.
IsInf	This function returns +1 if X is positive infinity, −1 if X is negative infinity and 0 otherwise.
IsNan	This function returns TRUE if X is not-a-number.
Ldexp	This function computes the value of X * (2 ^ E).
Log1p	This function computes the value of log(1 + x) in a way that is accurate for small x.