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Implement sin for double types 

This implementation was ported from the AMD builtin library
and has been tested with piglit, OpenCV, and the ocl conformance tests.

llvm-svn: 237155
This commit is contained in:
Tom Stellard 2015-05-12 17:18:47 +00:00
parent 2e6ff0c66e
commit 4294541290
1 changed files with 16 additions and 7 deletions
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23
libclc/generic/lib/math/sin.cl
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@ -55,14 +55,23 @@ _CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, sin, float);
#pragma OPENCL EXTENSION cl_khr_fp64 : enable
#define __CLC_FUNCTION __clc_sin_intrinsic
#define __CLC_INTRINSIC "llvm.sin"
#include <clc/math/unary_intrin.inc>
#undef __CLC_FUNCTION
#undef __CLC_INTRINSIC
_CLC_OVERLOAD _CLC_DEF double sin(double x) {
return __clc_sin_intrinsic(x);
double y = fabs(x);
double r, rr;
int regn;
if (y < 0x1.0p+47)
__clc_remainder_piby2_medium(y, &r, &rr, &regn);
else
__clc_remainder_piby2_large(y, &r, &rr, &regn);
double2 sc = __clc_sincos_piby4(r, rr);
int2 s = as_int2(regn & 1 ? sc.hi : sc.lo);
s.hi ^= ((regn > 1) << 31) ^ ((x < 0.0) << 31);
return isinf(x) | isnan(x) ? as_double(QNANBITPATT_DP64) : as_double(s);
}
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, sin, double);