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msvc: fix pointer type warning in BitsLog2Floor

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_BitScanReverse() takes an unsigned long*
http://msdn.microsoft.com/en-us/library/fbxyd7zd.aspx

fixes:
C4057: 'function': 'unsigned long *' differs in indirection to slightly
different base types from 'uint32_t *'

fixes issue #253

(cherry picked from commit 0250dfcc19)

Change-Id: I0101ef7be18c7ed188b35e9b17e7f71290953786
This commit is contained in:
James Zern 2015-07-18 11:12:21 -07:00
parent 84ecd9d85c
commit 382de22c84
1 changed files with 1 additions and 1 deletions
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2
src/utils/utils.h
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@ -90,7 +90,7 @@ static WEBP_INLINE int BitsLog2Floor(uint32_t n) {
#pragma intrinsic(_BitScanReverse) #pragma intrinsic(_BitScanReverse)
static WEBP_INLINE int BitsLog2Floor(uint32_t n) { static WEBP_INLINE int BitsLog2Floor(uint32_t n) {
uint32_t first_set_bit; unsigned long first_set_bit;
_BitScanReverse(&first_set_bit, n); _BitScanReverse(&first_set_bit, n);
return first_set_bit; return first_set_bit;
} }