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125e39bfea
This implements a set of vectorized math routines to be used by the compiler auto-vectorizer. Versions for vectors with 2 lanes up to 64 lanes (in powers of 2) are provided. These routines are based on the scalar versions of the math routines in libm/common, libm/math and libm/mathfp. They make extensive use of the GCC C vector extensions and GCN-specific builtins in GCC.
31 lines
745 B
C
31 lines
745 B
C
/* Based on newlib/libm/mathfp/sf_numtest.c in Newlib. */
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#include "amdgcnmach.h"
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v64si
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v64sf_numtestf (v64sf x)
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{
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// Explicitly create mask for internal function.
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v64si __mask = VECTOR_INIT (-1);
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FUNCTION_INIT (v64si);
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v64si wx;
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GET_FLOAT_WORD (wx, x, NO_COND);
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v64si exp = (wx & 0x7f800000) >> 23;
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/* Check for a zero input. */
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VECTOR_RETURN (VECTOR_INIT (0), x == 0.0);
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/* Check for not a number or infinity. */
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VECTOR_IF (exp == 0xff, cond)
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VECTOR_RETURN (VECTOR_MERGE (VECTOR_INIT (NAN), VECTOR_INIT (INF),
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wx & 0x7fffff),
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cond);
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/* Otherwise it's a finite value. */
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VECTOR_ELSE (cond)
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VECTOR_RETURN (VECTOR_INIT (NUM), cond);
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VECTOR_ENDIF
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FUNCTION_RETURN;
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}
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