/**
 *
 * \returns the Euler-angles of the rotation matrix \c *this using the convention defined by the triplet (\a a0,\a a1,\a a2)
 *
 * Each of the three parameters \a a0,\a a1,\a a2 represents the respective rotation axis as an integer in {0,1,2}.
 * For instance, in:
 * \code Vector3f ea = mat.eulerAngles(2, 0, 2); \endcode
 * "2" represents the z axis and "0" the x axis, etc. The returned angles are such that
 * we have the following equality:
 * \code
 * mat == AngleAxisf(ea[0], Vector3f::UnitZ())
 *      * AngleAxisf(ea[1], Vector3f::UnitX())
 *      * AngleAxisf(ea[2], Vector3f::UnitZ()); \endcode
 * This corresponds to the right-multiply conventions (with right hand side frames).
 *
 * The returned angles are in the ranges [0:pi]x[-pi:pi]x[-pi:pi].

 * NOTE: ported from Eigen C++ library
 * @see https://gitlab.com/libeigen/eigen/-/blob/master/Eigen/src/Geometry/EulerAngles.h
 * @see https://stackoverflow.com/questions/11514063/extract-yaw-pitch-and-roll-from-a-rotationmatrix
 * @param {number[]} res
 * @param {number[]|Float32Array|mat4} m4
 * @param {number} a0 axis index
 * @param {number} a1 axis index
 * @param {number} a2 axis index
 */
export function eulerAnglesFromMatrix(res: number[], m4: number[] | Float32Array | mat4, a0: number, a1: number, a2: number): void;
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