Initial structure for GTC_integer
Added integer log2 test
Added log2 to GTC_integer
Merge pull request #271 from plasmacel/master

fast branchless sign function #271
Merge branch 'master' into GTC_integer
Optimized sign for vector types #271
Used std features within GLM without redeclaring
Merge pull request #272 from plasmacel/master

optimized cot function implementation #272
Optimized glm::cot #272
Fixed multiline comment warning comment #273
Updated sign
Merge branch 'GTC_integer'
Further optimized glm::sign for signed and unsigned int #271
Fixed sign for unsigned types #271
Branch free refract and reflect
Optimized findMSB and findLSB
Updated built-in
Fixed build
Fixed SIMD enable for GLM tests
Added AVX2 detection for GLM tests