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Update libdivide.h with a couple of fixes for obscure problems from their git repo 

git-svn-id: https://svn.eduke32.com/eduke32@7595 1a8010ca-5511-0410-912e-c29ae57300e0
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terminx 2019-04-18 17:24:48 +00:00 committed by Christoph Oelckers
parent 1fae340426
commit 2d01182ef0
1 changed files with 2 additions and 2 deletions
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4
source/build/include/libdivide.h
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@ -575,7 +575,7 @@ static uint64_t libdivide_128_div_64_to_64(uint64_t u1, uint64_t u0, uint64_t v,
uint64_t q1, q0; // Quotient digits uint64_t q1, q0; // Quotient digits
uint64_t un64, un21, un10; // Dividend digit pairs uint64_t un64, un21, un10; // Dividend digit pairs
uint64_t rhat; // A remainder uint64_t rhat; // A remainder
int s; // Shift amount for norm int32_t s; // Shift amount for norm
// If overflow, set rem. to an impossible value, // If overflow, set rem. to an impossible value,
// and return the largest possible quotient // and return the largest possible quotient
@ -1268,8 +1268,8 @@ LIBDIVIDE_API struct libdivide_s32_branchfree_t libdivide_s32_branchfree_gen(int
int32_t libdivide_s32_do(int32_t numer, const struct libdivide_s32_t *denom) { int32_t libdivide_s32_do(int32_t numer, const struct libdivide_s32_t *denom) {
uint8_t more = denom->more; uint8_t more = denom->more;
uint32_t sign = (int8_t)more >> 7;
if (more & LIBDIVIDE_S32_SHIFT_PATH) { if (more & LIBDIVIDE_S32_SHIFT_PATH) {
uint32_t sign = (int8_t)more >> 7;
uint8_t shifter = more & LIBDIVIDE_32_SHIFT_MASK; uint8_t shifter = more & LIBDIVIDE_32_SHIFT_MASK;
uint32_t uq = (uint32_t)(numer + ((numer >> 31) & ((1U << shifter) - 1))); uint32_t uq = (uint32_t)(numer + ((numer >> 31) & ((1U << shifter) - 1)));
int32_t q = (int32_t)uq; int32_t q = (int32_t)uq;