947bdd059a
Uses the algorithm: tan(x) = sin(x) / sqrt(1-sin^2(x)) An alternative is: tan(x) = sin(x) / cos(x) Which produces more verbose bitcode and longer assembly. Either way, the generated bitcode seems pretty nasty and a more optimized but still precise-enough solution is welcome. Signed-off-by: Aaron Watry <awatry@gmail.com> Reviewed-by: Jan Vesely <jan.vesely@rutgers.edu> llvm-svn: 217511
9 lines
294 B
C++
9 lines
294 B
C++
/*
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* Note: tan(x) = sin(x)/cos(x) also, but the final assembly ends up being
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* twice as long for R600 (maybe for others as well).
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*/
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_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE tan(__CLC_GENTYPE x) {
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__CLC_GENTYPE sinx = sin(x);
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return sinx / sqrt( (__CLC_GENTYPE) 1.0 - (sinx*sinx) );
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}
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