common/common_funcs: Remove unused rotation functions
These are unused and essentially don't provide much benefit either. If we ever need rotation functions, these can be introduced in a way that they don't sit in a common_* header and require a bunch of ifdefing to simply be available
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@ -36,40 +36,6 @@
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#define Crash() exit(1)
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#endif
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// GCC 4.8 defines all the rotate functions now
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// Small issue with GCC's lrotl/lrotr intrinsics is they are still 32bit while we require 64bit
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#ifdef _rotl
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#define rotl _rotl
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#else
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inline u32 rotl(u32 x, int shift) {
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shift &= 31;
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if (!shift)
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return x;
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return (x << shift) | (x >> (32 - shift));
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}
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#endif
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#ifdef _rotr
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#define rotr _rotr
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#else
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inline u32 rotr(u32 x, int shift) {
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shift &= 31;
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if (!shift)
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return x;
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return (x >> shift) | (x << (32 - shift));
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}
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#endif
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inline u64 _rotl64(u64 x, unsigned int shift) {
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unsigned int n = shift % 64;
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return (x << n) | (x >> (64 - n));
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}
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inline u64 _rotr64(u64 x, unsigned int shift) {
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unsigned int n = shift % 64;
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return (x >> n) | (x << (64 - n));
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}
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#else // _MSC_VER
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#if (_MSC_VER < 1900)
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@ -85,10 +51,6 @@ __declspec(dllimport) void __stdcall DebugBreak(void);
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}
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#define Crash() DebugBreak()
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// cstdlib provides these on MSVC
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#define rotr _rotr
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#define rotl _rotl
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#endif // _MSC_VER ndef
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// Generic function to get last error message.
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