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54 lines
2.6 KiB
C
54 lines
2.6 KiB
C
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/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
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│ vi: set noet ft=c ts=8 sw=8 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2016 Google Inc. │
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│ │
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│ Licensed under the Apache License, Version 2.0 (the "License"); │
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│ you may not use this file except in compliance with the License. │
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│ You may obtain a copy of the License at │
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│ │
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│ http://www.apache.org/licenses/LICENSE-2.0 │
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│ │
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│ Unless required by applicable law or agreed to in writing, software │
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│ distributed under the License is distributed on an "AS IS" BASIS, │
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│ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. │
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│ See the License for the specific language governing permissions and │
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│ limitations under the License. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/weirdtypes.h"
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#include "libc/errno.h"
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#include "third_party/nsync/testing/smprintf.h"
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#include "third_party/nsync/testing/time_extra.h"
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#include "third_party/nsync/time.h"
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char *nsync_time_str (nsync_time t, int decimals) {
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static const struct {
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const char *suffix;
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double multiplier;
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} scale[] = {
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{ "ns", 1.0e-9, },
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{ "us", 1e-6, },
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{ "ms", 1e-3, },
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{ "s", 1.0, },
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{ "hr", 3600.0, },
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};
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double s = nsync_time_to_dbl (t);
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int i = 0;
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while (i + 1 != sizeof (scale) / sizeof (scale[0]) && scale[i + 1].multiplier <= s) {
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i++;
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}
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return (smprintf ("%.*f%s", decimals, s/scale[i].multiplier, scale[i].suffix));
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}
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double nsync_time_to_dbl (nsync_time t) {
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return (((double) NSYNC_TIME_SEC (t)) + ((double) NSYNC_TIME_NSEC (t) * 1e-9));
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}
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nsync_time nsync_time_from_dbl (double d) {
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time_t s = (time_t) d;
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if (d < s) {
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s--;
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}
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return (nsync_time_s_ns (s, (unsigned) ((d - (double) s) * 1e9)));
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}
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