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Diffstat (limited to '')
-rw-r--r-- | third_party/jpeg-xl/lib/jxl/enc_linalg.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/enc_linalg.h b/third_party/jpeg-xl/lib/jxl/enc_linalg.h new file mode 100644 index 0000000000..791770d5d4 --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/enc_linalg.h @@ -0,0 +1,24 @@ +// Copyright (c) the JPEG XL Project Authors. All rights reserved. +// +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +#ifndef LIB_JXL_LINALG_H_ +#define LIB_JXL_LINALG_H_ + +// Linear algebra. + +#include "lib/jxl/base/compiler_specific.h" +#include "lib/jxl/image.h" + +namespace jxl { + +using ImageD = Plane<double>; + +// A is symmetric, U is orthogonal, and A = U * Diagonal(diag) * Transpose(U). +void ConvertToDiagonal(const ImageD& A, ImageD* JXL_RESTRICT diag, + ImageD* JXL_RESTRICT U); + +} // namespace jxl + +#endif // LIB_JXL_LINALG_H_ |