X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_sched%2Frte_approx.h;h=74d55f457bc96b19fd9cad6ba0486bb94366719a;hb=65388f4c4cda8ec26a0e04371f51b4b81ffaf4d9;hp=3fdae3a03a5d8f08529d80c405cc52a618e8cc14;hpb=e9d48c0072d36eb6423b45fba4ec49d0def6c36f;p=dpdk.git

diff --git a/lib/librte_sched/rte_approx.h b/lib/librte_sched/rte_approx.h
index 3fdae3a03a..74d55f457b 100644
--- a/lib/librte_sched/rte_approx.h
+++ b/lib/librte_sched/rte_approx.h
@@ -1,34 +1,5 @@
-/*-
- *   BSD LICENSE
- * 
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- *   All rights reserved.
- * 
- *   Redistribution and use in source and binary forms, with or without
- *   modification, are permitted provided that the following conditions
- *   are met:
- * 
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * Neither the name of Intel Corporation nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- * 
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
  */
 
 #ifndef __INCLUDE_RTE_APPROX_H__
@@ -45,7 +16,7 @@ extern "C" {
  * Given a rational number alpha with 0 < alpha < 1 and a precision d, the goal
  * is to find positive integers p, q such that alpha - d < p/q < alpha + d, and
  * q is minimal.
- * 
+ *
  ***/
 
 #include <stdint.h>
@@ -58,7 +29,7 @@ extern "C" {
  * @param d
  *   Precision for the rational approximation
  * @param p
- *   Pointer to pre-allocated space where the numerator of the rational 
+ *   Pointer to pre-allocated space where the numerator of the rational
  *   approximation will be stored when operation is successful
  * @param q
  *   Pointer to pre-allocated space where the denominator of the rational
@@ -68,6 +39,24 @@ extern "C" {
  */
 int rte_approx(double alpha, double d, uint32_t *p, uint32_t *q);
 
+/**
+ * Find best rational approximation (64 bit version)
+ *
+ * @param alpha
+ *   Rational number to approximate
+ * @param d
+ *   Precision for the rational approximation
+ * @param p
+ *   Pointer to pre-allocated space where the numerator of the rational
+ *   approximation will be stored when operation is successful
+ * @param q
+ *   Pointer to pre-allocated space where the denominator of the rational
+ *   approximation will be stored when operation is successful
+ * @return
+ *   0 upon success, error code otherwise
+ */
+int rte_approx_64(double alpha, double d, uint64_t *p, uint64_t *q);
+
 #ifdef __cplusplus
 }
 #endif