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Faster sigma

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Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>
This commit is contained in:
Adrien Gallouët
2019-10-03 15:35:07 +00:00
parent 1fed2813e5
commit c93cef5491
1 changed files with 6 additions and 6 deletions
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12
src/bench.c
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@@ -59,7 +59,7 @@ gt_bench(int argc, char **argv)
for (int i = 0; !gt_quit && size <= 1450; i++) {
struct {
int64_t d, n, m, v, sigma;
int64_t d, n, m, v, s;
} s = { .n = 0 };
while (!gt_quit && s.n < 5) {
@@ -97,13 +97,13 @@ gt_bench(int argc, char **argv)
int64_t d2 = mbps - s.m; s.d += d1 * d2;
s.v = s.d / (s.n - 1);
s.sigma = 1 + (s.v - 1) / 2;
s.s = 1 + (s.v - 1) / 2;
while (s.sigma && s.sigma * s.sigma > s.v)
s.sigma--;
while (s.s && s.s * s.s > s.v)
s.s = (s.s + s.v / s.s) / 2;
if (term) {
printf("\r %5"PRIi64" %9"PRIi64" Mbps %9"PRIi64, size, s.m, s.sigma);
printf("\r %5"PRIi64" %9"PRIi64" Mbps %9"PRIi64, size, s.m, s.s);
fflush(stdout);
}
}
@@ -111,7 +111,7 @@ gt_bench(int argc, char **argv)
if (term) {
printf("\n");
} else {
printf("bench %"PRIi64" %"PRIi64" %"PRIi64"\n", size, s.m, s.sigma);
printf("bench %"PRIi64" %"PRIi64" %"PRIi64"\n", size, s.m, s.s);
}
size += 2 * 11 * 13;