secp256k1/src/bench_inv.c

/**********************************************************************
 * Copyright (c) 2014 Pieter Wuille                                   *
 * Distributed under the MIT software license, see the accompanying   *
 * file COPYING or http://www.opensource.org/licenses/mit-license.php.*
 **********************************************************************/
#include <stdio.h>

#include "include/secp256k1.h"

#include "util.h"
#include "num_impl.h"
#include "field_impl.h"
#include "group_impl.h"
#include "scalar_impl.h"
#include "bench.h"

typedef struct {
    secp256k1_scalar_t base, x;
} bench_inv_t;

void bench_inv_setup(void* arg) {
    bench_inv_t *data = (bench_inv_t*)arg;

    static const unsigned char init[32] = {
        0x02, 0x03, 0x05, 0x07, 0x0b, 0x0d, 0x11, 0x13,
        0x17, 0x1d, 0x1f, 0x25, 0x29, 0x2b, 0x2f, 0x35,
        0x3b, 0x3d, 0x43, 0x47, 0x49, 0x4f, 0x53, 0x59,
        0x61, 0x65, 0x67, 0x6b, 0x6d, 0x71, 0x7f, 0x83
    };

    secp256k1_scalar_set_b32(&data->base, init, NULL);
    secp256k1_scalar_set_b32(&data->x, init, NULL);
}

void bench_inv(void* arg) {
    bench_inv_t *data = (bench_inv_t*)arg;

    for (int i=0; i<20000; i++) {
        secp256k1_scalar_inverse(&data->x, &data->x);
        secp256k1_scalar_add(&data->x, &data->x, &data->base);
    }
}

int main(void) {
    secp256k1_ge_start();

    bench_inv_t data;
    run_benchmark(bench_inv, bench_inv_setup, NULL, &data, 10, 20000);

    secp256k1_ge_stop();
    return 0;
}