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tests/simulate/string/ffsll-1.c

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/* $Id: ffsll-1.c,v 1.1 2007/02/06 12:29:21 dmix Exp $  */

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#ifndef __AVR__

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# define _GNU_SOURCE

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#endif

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#include <stdlib.h>

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#include <string.h>

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int main ()

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{

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    static struct t_s {

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        long long val;

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        unsigned char pattern;

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    } t[] = {

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        { 0LL, 0 },

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        { 1LL, 1 },

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        { 0xffffffffffffffffLL, 1 },

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        { 0x0000000000000002LL, 2 },

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        { 0x8000000000000002LL, 2 },

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        { 0x7ffffffffffffff2LL, 2 },

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        { 0xfffffffffffffff2LL, 2 },

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        { 0x0000000000000040LL, 7 },

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        { 0xffffffffffffff40LL, 7 },

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        { 0x0000000000000080LL, 8 },

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        { 0xffffffffffffff80LL, 8 },

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        { 0x0000000000000100LL, 9 },

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        { 0xffffffffffffff00LL, 9 },

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        { 0x0000000000008000LL, 16 },

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        { 0xffffffffffff8000LL, 16 },

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        { 0x0000000000010000LL, 17 },

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        { 0xffffffffffff0000LL, 17 },

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        { 0x0000000000800000LL, 24 },

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        { 0xffffffffff800000LL, 24 },

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        { 0x0000000001000000LL, 25 },

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        { 0xffffffffff000000LL, 25 },

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        { 0x0000000080000000LL, 32 },

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        { 0xffffffff80000000LL, 32 },

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        { 0x0000000100000000LL, 33 },

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        { 0xffffffff00000000LL, 33 },

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        { 0x0000008000000000LL, 40 },

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        { 0xffffff8000000000LL, 40 },

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        { 0x0000010000000000LL, 41 },

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        { 0xffffff0000000000LL, 41 },

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        { 0x0000800000000000LL, 48 },

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        { 0xffff800000000000LL, 48 },

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        { 0x0001000000000000LL, 49 },

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        { 0xffff000000000000LL, 49 },

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        { 0x0080000000000000LL, 56 },

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        { 0xff80000000000000LL, 56 },

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        { 0x0100000000000000LL, 57 },

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        { 0xff00000000000000LL, 57 },

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        { 0x8000000000000000LL, 64 },

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    };

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    int i;

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    for (i = 0; i != (int)(sizeof(t)/sizeof(t[0])); i++) {

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        if (ffsll (t[i].val) != t[i].pattern)

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            exit (1 + i);

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    }

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    return 0;

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}

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