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near_lossless,FindClosestDiscretized: use unsigned ops

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quiets undefined sanitizer warnings of the form:
left shift of 128 by 24 places cannot be represented in type 'int'

Change-Id: I8a389f2ac9238513517180f302f759425eeb7262
This commit is contained in:
James Zern 2017-05-22 03:11:03 -07:00
parent 972104b34b
commit f1784aee04
1 changed files with 3 additions and 3 deletions
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6
src/enc/near_lossless_enc.c
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@ -26,9 +26,9 @@
// Quantizes the value up or down to a multiple of 1<<bits (or to 255),
// choosing the closer one, resolving ties using bankers' rounding.
static int FindClosestDiscretized(int a, int bits) {
const int mask = (1 << bits) - 1;
const int biased = a + (mask >> 1) + ((a >> bits) & 1);
static uint32_t FindClosestDiscretized(uint32_t a, int bits) {
const uint32_t mask = (1 << bits) - 1;
const uint32_t biased = a + (mask >> 1) + ((a >> bits) & 1);
assert(bits > 0);
if (biased > 0xff) return 0xff;
return biased & ~mask;