42 lines
2.4 KiB
C
42 lines
2.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ This program is free software; you can redistribute it and/or modify │
|
|
│ it under the terms of the GNU General Public License as published by │
|
|
│ the Free Software Foundation; version 2 of the License. │
|
|
│ │
|
|
│ This program is distributed in the hope that it will be useful, but │
|
|
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
|
|
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
|
|
│ General Public License for more details. │
|
|
│ │
|
|
│ You should have received a copy of the GNU General Public License │
|
|
│ along with this program; if not, write to the Free Software │
|
|
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
|
|
│ 02110-1301 USA │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/runtime/carsort.h"
|
|
#include "libc/str/str.h"
|
|
|
|
/**
|
|
* Sorts int32 key-value arrays of trivial size.
|
|
*
|
|
* @see test/libc/alg/carsort_test.c
|
|
* @see carsort1000() if larger
|
|
*/
|
|
textstartup void carsort100(size_t n, int32_t a[n][2]) {
|
|
int32_t t[2];
|
|
unsigned i, j;
|
|
for (i = 1; i < n; ++i) {
|
|
j = i;
|
|
memcpy(t, a[i], sizeof(t));
|
|
while (j > 0 && t[0] < a[j - 1][0]) {
|
|
memcpy(a[j], a[j - 1], sizeof(t));
|
|
--j;
|
|
}
|
|
memcpy(a[j], t, sizeof(t));
|
|
}
|
|
}
|