minihf.hamiltonian.integral.boys module

minihf.hamiltonian.integral.boys.boys(n, x)

Boys function

F_n(x)

using incomplete gamma function.

Parameters:

• n (int)

• x (float)

Return type:

float

minihf.hamiltonian.integral.boys.boys_recursion(n, x, fn)

Downward recursion F_{n-1}(x) from F_n(x)

Parameters:

• n (int)

• x (float)

• fn (callable)

Return type:

float