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| author | Frediano Ziglio <fziglio@redhat.com> | 2015-05-07 18:58:11 +0100 |
|---|---|---|
| committer | Frediano Ziglio <fziglio@redhat.com> | 2016-01-27 18:39:06 +0000 |
| commit | 75cb2701d33bf49887e0f9175b2c42e56047e7e7 (patch) | |
| tree | c7a85d14d6ae101168d638ba94863356ecc2501b /common | |
| parent | 580adf7c36d07bc9cb8bcb4092fea3dea3ec361c (diff) | |
| download | spice-common-75cb2701d33bf49887e0f9175b2c42e56047e7e7.tar.gz spice-common-75cb2701d33bf49887e0f9175b2c42e56047e7e7.tar.xz spice-common-75cb2701d33bf49887e0f9175b2c42e56047e7e7.zip | |
Use code to compute a bit mask
Code is in the slow path, this reduce space needed for data+code.
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
Diffstat (limited to 'common')
| -rw-r--r-- | common/quic.c | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/common/quic.c b/common/quic.c index a32a530..88cf143 100644 --- a/common/quic.c +++ b/common/quic.c @@ -194,16 +194,7 @@ static const unsigned long int bppmask[33] = { 0x1fffffff, 0x3fffffff, 0x7fffffff, 0xffffffff /* [32] */ }; -static const unsigned int bitat[32] = { - 0x00000001, 0x00000002, 0x00000004, 0x00000008, - 0x00000010, 0x00000020, 0x00000040, 0x00000080, - 0x00000100, 0x00000200, 0x00000400, 0x00000800, - 0x00001000, 0x00002000, 0x00004000, 0x00008000, - 0x00010000, 0x00020000, 0x00040000, 0x00080000, - 0x00100000, 0x00200000, 0x00400000, 0x00800000, - 0x01000000, 0x02000000, 0x04000000, 0x08000000, - 0x10000000, 0x20000000, 0x40000000, 0x80000000 /* [31]*/ -}; +#define bitat(n) (1u<<(n)) #define TABRAND_TABSIZE 256 @@ -371,7 +362,7 @@ static void golomb_coding_slow(QuicFamily *family, const BYTE n, const unsigned unsigned int * const codewordlen) { if (n < family->nGRcodewords[l]) { - (*codeword) = bitat[l] | (n & bppmask[l]); + (*codeword) = bitat(l) | (n & bppmask[l]); (*codewordlen) = (n >> l) + l + 1; } else { (*codeword) = n - family->nGRcodewords[l]; |