/usr/include/blas.h is in libalglib-dev 2.6.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (c) 2005-2007, Sergey Bochkanov (ALGLIB project).
>>> SOURCE LICENSE >>>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation (www.fsf.org); either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
A copy of the GNU General Public License is available at
http://www.fsf.org/licensing/licenses
>>> END OF LICENSE >>>
*************************************************************************/
#ifndef _blas_h
#define _blas_h
#include "ap.h"
#include "ialglib.h"
double vectornorm2(const ap::real_1d_array& x, int i1, int i2);
int vectoridxabsmax(const ap::real_1d_array& x, int i1, int i2);
int columnidxabsmax(const ap::real_2d_array& x, int i1, int i2, int j);
int rowidxabsmax(const ap::real_2d_array& x, int j1, int j2, int i);
double upperhessenberg1norm(const ap::real_2d_array& a,
int i1,
int i2,
int j1,
int j2,
ap::real_1d_array& work);
void copymatrix(const ap::real_2d_array& a,
int is1,
int is2,
int js1,
int js2,
ap::real_2d_array& b,
int id1,
int id2,
int jd1,
int jd2);
void inplacetranspose(ap::real_2d_array& a,
int i1,
int i2,
int j1,
int j2,
ap::real_1d_array& work);
void copyandtranspose(const ap::real_2d_array& a,
int is1,
int is2,
int js1,
int js2,
ap::real_2d_array& b,
int id1,
int id2,
int jd1,
int jd2);
void matrixvectormultiply(const ap::real_2d_array& a,
int i1,
int i2,
int j1,
int j2,
bool trans,
const ap::real_1d_array& x,
int ix1,
int ix2,
double alpha,
ap::real_1d_array& y,
int iy1,
int iy2,
double beta);
double pythag2(double x, double y);
void matrixmatrixmultiply(const ap::real_2d_array& a,
int ai1,
int ai2,
int aj1,
int aj2,
bool transa,
const ap::real_2d_array& b,
int bi1,
int bi2,
int bj1,
int bj2,
bool transb,
double alpha,
ap::real_2d_array& c,
int ci1,
int ci2,
int cj1,
int cj2,
double beta,
ap::real_1d_array& work);
#endif
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