-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2013 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__
* 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>
* @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
*/
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