diff options
Diffstat (limited to 'gsl-1.9/cblas/source_scal_c.h')
-rw-r--r-- | gsl-1.9/cblas/source_scal_c.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/gsl-1.9/cblas/source_scal_c.h b/gsl-1.9/cblas/source_scal_c.h new file mode 100644 index 0000000..9a5826b --- /dev/null +++ b/gsl-1.9/cblas/source_scal_c.h @@ -0,0 +1,39 @@ +/* blas/source_scal_c.h + * + * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman + * + * 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; 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +{ + INDEX i; + INDEX ix; + const BASE alpha_real = CONST_REAL0(alpha); + const BASE alpha_imag = CONST_IMAG0(alpha); + + if (incX <= 0) { + return; + } + + ix = OFFSET(N, incX); + + for (i = 0; i < N; i++) { + const BASE x_real = REAL(X, ix); + const BASE x_imag = IMAG(X, ix); + REAL(X, ix) = x_real * alpha_real - x_imag * alpha_imag; + IMAG(X, ix) = x_real * alpha_imag + x_imag * alpha_real; + ix += incX; + } +} |