Special Packages

Compute the Bessel function of the second kind of order one.

Return a double-precision floating-point number with the magnitude of x and the sign of y.

Return a single-precision floating-point number with the magnitude of x and the sign of y.

Incomplete beta function.

Inverse incomplete beta function.

Compute the Fresnel integral C(x).

Compute the Fresnel integral S(x).

Gamma function.

Compute the ratio of two gamma functions.

Calculate the Lanczos sum for the approximation of the gamma function.

Calculate a scaled Lanczos sum for the approximation of the gamma function.

Compute gamma(x+1) - 1.

Incomplete gamma function.

Inverse incomplete gamma function.

Natural logarithm of the gamma function.

Sign of the gamma function.

Compute the complete elliptic integral of the first kind.

Error function.

Complementary error function.

Inverse complementary error function.