Number Packages

Return a single-precision complex floating-point number with the same magnitude as `z` and the sign of `y*z`.

Round a double-precision complex floating-point number toward negative infinity.

Round each component of a double-precision complex floating-point number to the nearest multiple of 10^n toward negative infinity.

Incomplete beta function.

Inverse incomplete beta function.

Compute the angle in the plane (in radians) between the positive x-axis and the ray from (0,0) to the point (x,y).

Round a single-precision floating-point numeric value toward negative infinity.

Round a double-precision floating-point number to the nearest multiple of 10^n toward negative infinity.

Round a numeric value to the nearest number toward negative infinity with N significant figures.

Split a double-precision floating-point number into a normalized fraction and an integer power of two.

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.

Multiply two double-precision floating-point numbers.

Multiply two single-precision floating-point numbers.

Subtract two double-precision floating-point numbers.

Subtract two single-precision floating-point numbers.