rotate_x Function

public pure function rotate_x(angle) result(rst)

Constructs the rotation matrix describing a rotation about an x-axis such that $\overrightarrow{r_2} = \textbf{R}_x \overrightarrow{r_1}$.

$$\textbf{R}_x = \left[ \begin{matrix} 1 & 0 & 0 \\ 0 & \cos{\theta_x} & -\sin{\theta_x} \\ 0 & \sin{\theta_x} & \cos{\theta_x} \\ \end{matrix} \right]$$

Arguments

Type	Intent	Optional	Attributes		Name
real(kind=real64),	intent(in)			::	angle	The rotation angle, in radians.

Return Value real(kind=real64), (3,3)

The resulting 3-by-3 matrix.

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