table of contents
| rte_approx.h(3) | DPDK | rte_approx.h(3) |
NAME¶
rte_approx.h
SYNOPSIS¶
#include <stdint.h>
Functions¶
int rte_approx (double alpha, double d, uint32_t *p,
uint32_t *q)
int rte_approx_64 (double alpha, double d, uint64_t *p, uint64_t *q)
Detailed Description¶
RTE Rational Approximation
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.
Definition in file rte_approx.h.
Function Documentation¶
int rte_approx (double alpha, double d, uint32_t * p, uint32_t * q)¶
Find best rational approximation
Parameters
alpha Rational number to approximate
d Precision for the rational approximation
p Pointer to pre-allocated space where the numerator of the rational approximation will be stored when operation is successful
q Pointer to pre-allocated space where the denominator of the rational approximation will be stored when operation is successful
d Precision for the rational approximation
p Pointer to pre-allocated space where the numerator of the rational approximation will be stored when operation is successful
q Pointer to pre-allocated space where the denominator of the rational approximation will be stored when operation is successful
Returns
0 upon success, error code otherwise
int rte_approx_64 (double alpha, double d, uint64_t * p, uint64_t * q)¶
Find best rational approximation (64 bit version)
Parameters
alpha Rational number to approximate
d Precision for the rational approximation
p Pointer to pre-allocated space where the numerator of the rational approximation will be stored when operation is successful
q Pointer to pre-allocated space where the denominator of the rational approximation will be stored when operation is successful
d Precision for the rational approximation
p Pointer to pre-allocated space where the numerator of the rational approximation will be stored when operation is successful
q Pointer to pre-allocated space where the denominator of the rational approximation will be stored when operation is successful
Returns
0 upon success, error code otherwise
Author¶
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| Fri Dec 15 2023 | Version 23.11.0 |