Gsl (gb.gsl)
This class provides useful mathematical functions and constants.
This class is static.
Constants
E
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The base of exponentials, e = Exp(1) .
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EULER
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Euler’s constant, γ.
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INV2_PI
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Twice the reciprocal of pi, 2/π = 2 / Pi .
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INV2_SQRTPI
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Two divided by the square root of pi, 2/√π = 2 / Sqr(Pi) .
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INV_PI
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The reciprocal of pi, 1/π = 1 / Pi .
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LN10
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The natural logarithm of ten, ln(10) = Log(10) .
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LN2
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The natural logarithm of two, ln(2) = Log(2) .
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LNPI
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The natural logarithm of pi, ln(π) = Log(Pi) .
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LOG10E
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The base-10 logarithm of e, log10(e) = Log10(Exp(1)) .
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LOG2E
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The base-2 logarithm of e, log2(e) = Log2(Exp(1)) .
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PI
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The constant pi, π = Pi .
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PI_2
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PI_4
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SQRT1_2
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The square root of one-half, √ 1/2 = Sqr(0.5) .
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SQRT2
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The square root of two, √2 = Sqr(2) .
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SQRT3
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The square root of three, √3 = Sqr(3) .
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SQRTPI
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The square root of π, √/π/ = Sqr(Pi) .
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Static methods
Acosh
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This function computes the value of arccosh(x).
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Asinh
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This function computes the value of arcsinh(x).
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Atanh
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This function computes the value of arctanh(x).
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Expm1
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This function computes the value of exp(x) − 1 in a way that is accurate for small x.
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Fcmp
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This function determines whether X and Y are approximately equal to a relative accuracy epsilon E.
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Frexp
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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 .
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Hypot
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This function computes the value of √( x ² + y ²) in a way that avoids overflow.
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Hypot3
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This function computes the value of √( x ² + y ² + z ²) in a way that avoids overflow.
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IsFinite
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This function returns TRUE if X is a real number, and FALSE if it is infinite or not-a-number.
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IsInf
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This function returns +1 if X is positive infinity, −1 if X is negative infinity and 0 otherwise.
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IsNan
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This function returns TRUE if X is not-a-number.
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Ldexp
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This function computes the value of X * (2 ^ E) .
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Log1p
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This function computes the value of log(1 + x) in a way that is accurate for small x.
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