delete bits.c

2021/libsrc/bits.c

@@ -1,85 +0,0 @@
-/* bits.c - bits.h tests
- *
- * Copyright (C) 2021 Bruno Raoult ("br")
- * Licensed under the GNU General Public License v3.0 or later.
- * Some rights reserved. See COPYING.
- *
- * You should have received a copy of the GNU General Public License along with this
- * program. If not, see <https://www.gnu.org/licenses/gpl-3.0-standalone.htmlL>.
- *
- * SPDX-License-Identifier: GPL-3.0-or-later <https://spdx.org/licenses/GPL-3.0-or-later.html>
- *
- */
-
-#include "bits.h"
-
-#ifdef BIN_bits
-#include <stdio.h>
-#include <stdlib.h>
-
-static inline int _popcount64(u64 n)
-{
-    int count = 0;
-    while (n) {
-        count++;
-        n &= (n - 1);
-    }
-    return count;
-}
-
-static inline int _ctz64(u64 n)
-{
-    return _popcount64((n & -n) - 1);
-}
-
-static inline int _clz64(u64 n)
-{
-    u64 r, q;
-
-    r = (n > 0xFFFFFFFF) << 5; n >>= r;
-    q = (n > 0xFFFF)     << 4; n >>= q; r |= q;
-    q = (n > 0xFF  )     << 3; n >>= q; r |= q;
-    q = (n > 0xF   )     << 2; n >>= q; r |= q;
-    q = (n > 0x3   )     << 1; n >>= q; r |= q;
-    r |= (n >> 1);
-   return __WORDSIZE - r - 1;
-}
-
-static inline int _ffs64(u64 n)
-{
-    if (n == 0)
-        return (0);
-
-    return _popcount64(n ^ ~-n);
-}
-
-
-int main(int ac, char **av)
-{
-    u64 u = 123, _tmp;
-    int curbit;
-    int base = 10;
-    debug_init(0);
-    if (ac > 2)
-        base = atoi(*(av+2));
-    if (ac > 1) {
-        u = strtoul(*(av+1), NULL, base);
-        printf("base=%d input=%#lx\n", base, u);
-        printf("popcount64(%lu) = %d/%d\n", u, popcount64(u), _popcount64(u));
-        printf("ctz64(%lu) = %d/%d\n", u, ctz64(u), _ctz64(u));
-        printf("clz64(%lu) = %d/%d\n", u, clz64(u), _clz64(u));
-        printf("ffs64(%lu) = %d/%d\n", u, ffs64(u), _ffs64(u));
-        printf("\n");
-
-        bit_for_each64(curbit, _tmp, u) {
-            printf("loop: curbit=%d tmp=%ld\n", curbit, _tmp);
-        }
-        printf("\n");
-        bit_for_each64_2(curbit, _tmp, u) {
-            printf("loop2: curbit=%d tmp=%ld\n", curbit, _tmp);
-        }
-
-    }
-    return 0;
-}
-#endif  /* BIN_bits */