thin_metadata_size.c: format output enhancements
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@ -50,10 +50,7 @@ static struct global *init(void)
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memset(&r, 0, sizeof(r));
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r.unit.chars = "bskKmMgGtTpPeEzZyY";
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u = 0;
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r.unit.factors[u++] = 1;
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r.unit.factors[u++] = 512;
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r.unit.factors[u++] = 1024;
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r.unit.factors[u++] = 1000;
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r.unit.factors[u++] = 1, r.unit.factors[u++] = 512, r.unit.factors[u++] = 1024, r.unit.factors[u++] = 1000;
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for ( ; u < UNIT_ARRAY_SZ; u += 2) {
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r.unit.factors[u] = r.unit.factors[2] * r.unit.factors[u - 2];
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r.unit.factors[u+1] = r.unit.factors[3] * r.unit.factors[u - 1];
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@ -178,9 +175,23 @@ static const unsigned mappings_per_block(void)
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return (btree_size.node - btree_size.node_header) / btree_size.entry;
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}
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static unsigned precision(double r)
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static void printf_precision(double r, int full, char *unit_str)
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{
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return r == truncl(r) ? 0 : 3;
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double rtrunc = truncl(r);
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/* FIXME: correct output */
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if (full)
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printf("%s - estimated metadata area size is ", prg);
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if (r == rtrunc)
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printf("%llu", (unsigned long long) r);
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else
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printf(r - truncl(r) < 1E-3 ? "%0.3e" : "%0.3f", r);
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if (full)
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printf(" %s", unit_str);
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putchar('\n');
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}
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static void estimated_result(struct global *g)
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@ -192,13 +203,7 @@ static void estimated_result(struct global *g)
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r = (1.0 + (2 * g->options.n[poolsize] / g->options.n[blocksize] / mappings_per_block() + g->options.n[maxthins])) * 8 * bytes_per_sector; /* in bytes! */
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r /= g->unit.factors[idx]; /* in requested unit */
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// printf("%c idx=%u factor=%llu r=%f\n", g->options.unit, idx, g->unit.factors[idx], r);
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/* FIXME: correct output */
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if (g->options.n[numeric])
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printf("%.*f\n", precision(r), r);
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else
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printf("%s - estimated metadata area size is %.*f %s\n", prg, precision(r), r, g->unit.strings[idx]);
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printf_precision(r, !g->options.n[numeric], g->unit.strings[idx]);
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}
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int main(int argc, char **argv)
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