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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.
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/* Based on newlib/libm/mathfp/e_scalb.c in Newlib. */
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#include "amdgcnmach.h"
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v64si v64df_isnan (v64df);
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v64si v64df_finite (v64df);
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v64df v64df_rint_aux (v64df, v64di);
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v64df v64df_scalbn_aux (v64df, v64si, v64di);
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DEF_VD_MATH_FUNC (v64df, scalb, v64df x, v64df fn)
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{
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FUNCTION_INIT (v64df);
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VECTOR_IF (v64df_isnan(x) | v64df_isnan(fn), cond)
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VECTOR_RETURN (x * fn, cond);
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VECTOR_ENDIF
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VECTOR_IF (~v64df_finite (fn), cond)
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VECTOR_IF2 (fn > 0.0, cond2, cond)
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VECTOR_RETURN (x * fn, cond2);
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VECTOR_ELSE2 (cond2, cond)
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VECTOR_RETURN (x / (-fn), cond2);
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VECTOR_ENDIF
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VECTOR_ENDIF
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VECTOR_IF (v64df_rint_aux (fn, __mask) != fn, cond)
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VECTOR_RETURN ((fn-fn)/(fn-fn), cond);
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VECTOR_ENDIF
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VECTOR_IF (fn > 65000.0, cond)
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VECTOR_RETURN (v64df_scalbn_aux (x, VECTOR_INIT (65000), __mask), cond);
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VECTOR_ENDIF
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VECTOR_IF (-fn > 65000.0, cond)
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VECTOR_RETURN (v64df_scalbn_aux (x, VECTOR_INIT (-65000), __mask), cond);
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VECTOR_ENDIF
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VECTOR_RETURN (v64df_scalbn_aux (x, __builtin_convertvector (fn, v64si), __mask),
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NO_COND);
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FUNCTION_RETURN;
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}
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DEF_VARIANTS2 (scalb, df, df)
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