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Function rc_algebra_set_zero_tolerance

Function Documentation

void rc_algebra_set_zero_tolerance(double tol)

Sets the zero tolerance for detecting singular matrices.

When inverting matrices or solving a linear system, this library first checks that the determinant of the matrix is non-zero. Due to the rounding errors that come from float-point math, we cannot check if the determinant is exactly zero. Instead, it is checked to be smaller in magnitude than the zero-tolerance.

The default value is 10^-8 but it can be changed here if the user is dealing with unusually small or large floating point values.

This only effects the operation of rc_algebra_invert_matrix, rc_algebra_invert_matrix_inplace, and rc_algebra_lin_system_solve.

Parameters

tol – [in] The zero-tolerance