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More re-enumeration prep work

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This commit is contained in:
Uleat
2014-09-25 18:48:58 -04:00
parent aa021addc1
commit 039e321dde
10 changed files with 516 additions and 533 deletions
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common/misc_functions.cpp
+23
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@@ -387,3 +387,26 @@ float EQHtoFloat(int d)
{
return(360.0f - float((d * 360) >> 11));
}
// returns a swapped-bit value for use in client translator and inventory functions
uint32 SwapBits21and22(uint32 mask)
{
static const uint32 BIT21 = 1 << 21;
static const uint32 BIT22 = 1 << 22;
static const uint32 SWAPBITS = (BIT21 | BIT22);
if ((bool)(mask & BIT21) != (bool)(mask & BIT22))
mask ^= SWAPBITS;
return mask;
}
// returns an unset bit 22 value for use in client translators
uint32 Catch22(uint32 mask)
{
static const uint32 KEEPBITS = ~(1 << 22);
mask &= KEEPBITS;
return mask;
}