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Last change
on this file since 117 was
117,
checked in by rosiere, 15 years ago
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1) Platforms : add new organization for test
2) Load_Store_Unit : add array to count nb_check in store_queue
3) Issue_queue and Core_Glue : rewrite the issue network
4) Special_Register_Unit : add reset value to register CID
5) Softwares : add multicontext test
6) Softwares : add SPECINT
7) Softwares : add MiBench?
7) Read_queue : inhib access for r0
8) Change Core_Glue (network) - dont yet support priority and load balancing scheme
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-
Property svn:executable set to
*
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Property svn:keywords set to
Id
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File size:
841 bytes
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| Line | |
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| 1 | /* +++Date last modified: 05-Jul-1997 */ |
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| 2 | |
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| 3 | /* |
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| 4 | ** Bit counter by Ratko Tomic |
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| 5 | */ |
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| 6 | |
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| 7 | #include "bitcount-bitops.h" |
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| 8 | |
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| 9 | int CDECL bitcount(long i) |
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| 10 | { |
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| 11 | i = ((i & 0xAAAAAAAAL) >> 1) + (i & 0x55555555L); |
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| 12 | i = ((i & 0xCCCCCCCCL) >> 2) + (i & 0x33333333L); |
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| 13 | i = ((i & 0xF0F0F0F0L) >> 4) + (i & 0x0F0F0F0FL); |
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| 14 | i = ((i & 0xFF00FF00L) >> 8) + (i & 0x00FF00FFL); |
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| 15 | i = ((i & 0xFFFF0000L) >> 16) + (i & 0x0000FFFFL); |
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| 16 | return (int)i; |
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| 17 | } |
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| 18 | |
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| 19 | #ifdef TEST |
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| 20 | |
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| 21 | #include <stdlib.h> |
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| 22 | #include "snip_str.h" /* For plural_text() macro */ |
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| 23 | |
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| 24 | main(int argc, char *argv[]) |
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| 25 | { |
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| 26 | long n; |
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| 27 | |
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| 28 | while(--argc) |
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| 29 | { |
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| 30 | int i; |
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| 31 | |
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| 32 | n = atol(*++argv); |
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| 33 | i = bitcount(n); |
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| 34 | printf("%ld contains %d bit%s set\n", |
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| 35 | n, i, plural_text(i)); |
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| 36 | } |
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| 37 | return 0; |
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| 38 | } |
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| 39 | |
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| 40 | #endif /* TEST */ |
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