Procedures

Bessel function of the first kind of order zero $J_0(x)$.

Bessel function of the first kind of order one $J_1(x)$.

Bessel function of the second kind of order zero $Y_0(x)$.

Bessel function of the second kind of order one $Y_1(x)$.

CALGO 715 Bessel functions $J_0(x)$ and $Y_0(x)$.

CALGO 715 Bessel functions $J_1(x)$ and $Y_1(x)$.

CALGO 683 Exponential integral $\mathrm{E}_n(z)$.

CALGO 385 Exponential integral $\mathrm{Ei}(x)$.

Exponential integral $\mathrm{E}_1(x)$ or $\mathrm{E}_1(z)$.

Exponential integral $\mathrm{Ei}(x)$.

Exponential integral $\mathrm{E}_n(z)$.

Gauss hypergeometric function ${}_2F_1(a, b; c; z)$.

CPC Michel Gauss hypergeometric function ${}_2F_1(a, b; c; z)$.

Evaluates the closeness between two real or complex variables.

Evaluates the smallness of a variable compared to a reference value.

Not a Number NaN.

Negative infinity $-\infty$.

Positive infinity $+\infty$.

Struve function $\mathbf{H}_0(x)$.

Struve function $\mathbf{H}_1(x)$.

CALGO 757 Struve function $\mathbf{H}_0(x)$.

CALGO 757 Struve function $\mathbf{H}_1(x)$.