diff --git a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_32f_sincos_32fc.h b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_32f_sincos_32fc.h
index f43e99faf..5e89da9af 100644
--- a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_32f_sincos_32fc.h
+++ b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_32f_sincos_32fc.h
@@ -2,6 +2,7 @@
* \file volk_gnsssdr_32f_sincos_32fc.h
* \brief VOLK_GNSSSDR kernel: Computes the sine and cosine of a vector of floats.
* \authors
+ * - Julien Pommier, 2007
*
- Carles Fernandez-Prades, 2016. cfernandez(at)cttc.es
*
*
@@ -9,27 +10,25 @@
*
* -------------------------------------------------------------------------
*
- * Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
+ * Copyright (C) 2007 Julien Pommier
*
- * GNSS-SDR is a software defined Global Navigation
- * Satellite Systems receiver
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
*
- * This file is part of GNSS-SDR.
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
*
- * GNSS-SDR 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 3 of the License, or
- * (at your option) any later version.
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
*
- * GNSS-SDR 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 GNSS-SDR. If not, see .
- *
- * -------------------------------------------------------------------------
+ * (this is the zlib license)
*/
/*!
@@ -38,7 +37,8 @@
* \b Overview
*
* VOLK_GNSSSDR kernel that computes the sine and cosine of a vector
- * of floats, providing the output in a complex vector (cosine, sine)
+ * of floats, providing the output in a complex vector (cosine, sine).
+ * WARNING: it is not IEEE compliant, but the max absolute error on sines is 2^-24 on the range [-8192, 8192].
*
* Dispatcher Prototype
* \code
@@ -63,7 +63,7 @@
#ifdef LV_HAVE_SSE4_1
#include
-/* Adapted from the original VOLK.
+/* Adapted from the original VOLK for comparison purposes.
* In turn based on algorithms from:
* Naoki Shibata, "Efficient Evaluation Methods of Elementary Functions Suitable for SIMD Computation,"
* Computer Science Research and Development, May 2010, Volume 25, Issue 1, pp 25-32. DOI 10.1007/s00450-010-0108-2 */
@@ -157,7 +157,7 @@ static inline void volk_gnsssdr_32f_sincos_32fc_u_sse4_1(lv_32fc_t* out, const f
#ifdef LV_HAVE_SSE4_1
#include
-/* Adapted from the original VOLK.
+/* Adapted from the original VOLK for comparison purposes.
* In turn based on algorithms from:
* Naoki Shibata, "Efficient Evaluation Methods of Elementary Functions Suitable for SIMD Computation,"
* Computer Science Research and Development, May 2010, Volume 25, Issue 1, pp 25-32. DOI 10.1007/s00450-010-0108-2 */
diff --git a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_s32f_sincos_32fc.h b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_s32f_sincos_32fc.h
index b0f87026e..a5ef7efbe 100644
--- a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_s32f_sincos_32fc.h
+++ b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_s32f_sincos_32fc.h
@@ -2,6 +2,7 @@
* \file volk_gnsssdr_s32f_sincos_32fc.h
* \brief VOLK_GNSSSDR kernel: Computes the sine and cosine of a vector of floats.
* \authors
+ * - Julien Pommier, 2007
*
- Carles Fernandez-Prades, 2016. cfernandez(at)cttc.es
*
*
@@ -9,29 +10,28 @@
*
* -------------------------------------------------------------------------
*
- * Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
+ * Copyright (C) 2007 Julien Pommier
*
- * GNSS-SDR is a software defined Global Navigation
- * Satellite Systems receiver
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
*
- * This file is part of GNSS-SDR.
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
*
- * GNSS-SDR 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 3 of the License, or
- * (at your option) any later version.
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
*
- * GNSS-SDR 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 GNSS-SDR. If not, see .
- *
- * -------------------------------------------------------------------------
+ * (this is the zlib license)
*/
+
/*!
* \page volk_gnsssdr_s32f_sincos_32fc
*
@@ -40,7 +40,7 @@
* VOLK_GNSSSDR kernel that computes the sine and cosine with a fixed
* phase increment \p phase_inc per sample, providing the output in a complex vector (cosine, sine).
* WARNING: it is not IEEE compliant, but the max absolute error on sines is 2^-24 on the range [-8192, 8192].
- * As a rule of thumb, keep initial phase + phase_inc * num_points within that range.
+ * To be safe, keep initial phase + phase_inc * num_points within that range.
*
* Dispatcher Prototype
* \code