From e65c64791233e9049475bc5b6b158ac0a4019fee Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lukas=20T=C3=B6nne?= Date: Mon, 7 Dec 2015 12:35:36 +0100 Subject: [PATCH] Added a comment to our use of the term 'adjoint' in BLI_math. In modern usage this means the conjugate transpose, but we stick to the classical usage (i.e. adjugate matrix), like Eigen does. --- source/blender/blenlib/BLI_math_matrix.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/source/blender/blenlib/BLI_math_matrix.h b/source/blender/blenlib/BLI_math_matrix.h index 5900e391d3e..6fb983a622e 100644 --- a/source/blender/blenlib/BLI_math_matrix.h +++ b/source/blender/blenlib/BLI_math_matrix.h @@ -173,6 +173,10 @@ bool is_orthonormal_m4(float mat[4][4]); bool is_uniform_scaled_m3(float mat[3][3]); bool is_uniform_scaled_m4(float m[4][4]); +/* Note: 'adjoint' here means the adjugate (adjunct, "classical adjoint") matrix! + * Nowadays 'adjoint' usually refers to the conjugate transpose, + * which for real-valued matrices is simply the transpose. + */ void adjoint_m2_m2(float R[2][2], float A[2][2]); void adjoint_m3_m3(float R[3][3], float A[3][3]); void adjoint_m4_m4(float R[4][4], float A[4][4]);