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Fixed 8-bit and 16-bit xe::lzcnt.

This commit is contained in:
gibbed 2015-05-28 12:16:19 -05:00
parent d1dbee2052
commit 3300945660
1 changed files with 2 additions and 2 deletions
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4
src/xenia/base/math.h
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@ -75,13 +75,13 @@ inline uint8_t lzcnt(uint8_t v) {
DWORD index;
DWORD mask = v;
BOOLEAN is_nonzero = _BitScanReverse(&index, mask);
return static_cast<uint8_t>(is_nonzero ? int8_t(index - 24) ^ 0x7 : 8);
return static_cast<uint8_t>(is_nonzero ? int8_t(index) ^ 0x7 : 8);
}
inline uint8_t lzcnt(uint16_t v) {
DWORD index;
DWORD mask = v;
BOOLEAN is_nonzero = _BitScanReverse(&index, mask);
return static_cast<uint8_t>(is_nonzero ? int8_t(index - 16) ^ 0xF : 16);
return static_cast<uint8_t>(is_nonzero ? int8_t(index) ^ 0xF : 16);
}
inline uint8_t lzcnt(uint32_t v) {
DWORD index;