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141 lines (127 loc) · 3.15 KB
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/**
* @license Apache-2.0
*
* Copyright (c) 2025 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <time.h>
#include <sys/time.h>
#include <boost/random/mersenne_twister.hpp>
#include <boost/random/uniform_real_distribution.hpp>
#include <boost/TODO/TODO.hpp>
using boost::random::uniform_real_distribution;
using boost::random::mt19937;
#define NAME "TODO"
#define ITERATIONS 1000000
#define REPEATS 3
/**
* Define prototypes for local functions.
*/
static void print_version( void );
static void print_summary( int total, int passing );
static void print_results( double elapsed );
static double tic( void );
static double benchmark( void );
/**
* Prints the TAP version.
*/
static void print_version( void ) {
printf( "TAP version 13\n" );
}
/**
* Prints the TAP summary.
*
* @param total total number of tests
* @param passing total number of passing tests
*/
static void print_summary( int total, int passing ) {
printf( "#\n" );
printf( "1..%d\n", total ); // TAP plan
printf( "# total %d\n", total );
printf( "# pass %d\n", passing );
printf( "#\n" );
printf( "# ok\n" );
}
/**
* Prints benchmarks results.
*
* @param elapsed elapsed time in seconds
*/
static void print_results( double elapsed ) {
double rate = (double)ITERATIONS / elapsed;
printf( " ---\n" );
printf( " iterations: %d\n", ITERATIONS );
printf( " elapsed: %0.9f\n", elapsed );
printf( " rate: %0.9f\n", rate );
printf( " ...\n" );
}
/**
* Returns a clock time.
*
* @return clock time
*/
static double tic( void ) {
struct timeval now;
gettimeofday( &now, NULL );
return (double)now.tv_sec + (double)now.tv_usec/1.0e6;
}
/**
* Runs a benchmark.
*
* @return elapsed time in seconds
*/
static double benchmark( void ) {
double elapsed;
double x;
double y;
double t;
int i;
// Define a new pseudorandom number generator:
mt19937 rng;
// Define a uniform distribution for generating pseudorandom numbers as "doubles" between a minimum value (inclusive) and a maximum value (exclusive):
uniform_real_distribution<> randu( 0.0, 1.0 );
t = tic();
for ( i = 0; i < ITERATIONS; i++ ) {
x = randu( rng );
y = 0.0; // TODO
if ( y != y ) {
printf( "should not return NaN\n" );
break;
}
}
elapsed = tic() - t;
if ( y != y ) {
printf( "should not return NaN\n" );
}
return elapsed;
}
/**
* Main execution sequence.
*/
int main( void ) {
double elapsed;
int i;
print_version();
for ( i = 0; i < REPEATS; i++ ) {
printf( "# cpp::boost::%s\n", NAME );
elapsed = benchmark();
print_results( elapsed );
printf( "ok %d benchmark finished\n", i+1 );
}
print_summary( REPEATS, REPEATS );
return 0;
}