Number Packages

Evaluate the natural logarithm of the factorial function.

Compute the falling factorial.

Compute an absolute value.

Compute the nth Fibonacci number.

Compute the Fibonacci number index.

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

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

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

Round a numeric value to the nearest power of 10 toward negative infinity.

Round a numeric value to the nearest power of two toward negative infinity.

Evaluate the signum function of a double-precision complex floating-point number.

Digamma function.

Dirichlet eta function.

Compute the complete elliptic integral of the second kind.

Compute the argument of a double-precision complex floating-point number in radians.

Compute the absolute value and the phase of a double-precision complex floating-point number.

Round each component of a double-precision complex floating-point number to the nearest integer.

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

Round a numeric value to the nearest multiple of b^n toward negative infinity.

Cube root of double-precision floating-point epsilon.