newlib/libm/machine/amdgcn/v64sf_scalb.c

   1 /*
   2  * Copyright 2023 Siemens
   3  *
   4  * The authors hereby grant permission to use, copy, modify, distribute,
   5  * and license this software and its documentation for any purpose, provided
   6  * that existing copyright notices are retained in all copies and that this
   7  * notice is included verbatim in any distributions.  No written agreement,
   8  * license, or royalty fee is required for any of the authorized uses.
   9  * Modifications to this software may be copyrighted by their authors
  10  * and need not follow the licensing terms described here, provided that
  11  * the new terms are clearly indicated on the first page of each file where
  12  * they apply.
  13  */
  14
  15 /*
  16  * ====================================================
  17  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
  18  *
  19  * Developed at SunPro, a Sun Microsystems, Inc. business.
  20  * Permission to use, copy, modify, and distribute this
  21  * software is freely granted, provided that this notice
  22  * is preserved.
  23  * ====================================================
  24  */
  25
  26 /* Based on newlib/libm/mathfp/ef_scalb.c in Newlib.  */
  27
  28 #include "amdgcnmach.h"
  29
  30 v64si v64sf_isnanf (v64sf);
  31 v64si v64sf_finitef (v64sf);
  32 v64sf v64sf_rintf_aux (v64sf, v64si);
  33 v64sf v64sf_scalbnf_aux (v64sf, v64si, v64si);
  34
  35 DEF_VS_MATH_FUNC (v64sf, scalbf, v64sf x, v64sf fn)
  36 {
  37   FUNCTION_INIT (v64sf);
  38
  39   VECTOR_IF (v64sf_isnanf(x) | v64sf_isnanf(fn), cond)
  40     VECTOR_RETURN (x * fn, cond);
  41   VECTOR_ENDIF
  42   VECTOR_IF (~v64sf_finitef (fn), cond)
  43     VECTOR_IF2 (fn > 0.0f, cond2, cond)
  44       VECTOR_RETURN (x * fn, cond2);
  45     VECTOR_ELSE2 (cond2, cond)
  46       VECTOR_RETURN (x / (-fn), cond2);
  47     VECTOR_ENDIF
  48   VECTOR_ENDIF
  49   VECTOR_IF (v64sf_rintf_aux (fn, __mask) != fn, cond)
  50     VECTOR_RETURN ((fn-fn)/(fn-fn), cond);
  51   VECTOR_ENDIF
  52 #if INT_MAX > 65000
  53   VECTOR_IF (fn > 65000.0f, cond)
  54     VECTOR_RETURN (v64sf_scalbnf_aux (x, VECTOR_INIT (65000), __mask), cond);
  55   VECTOR_ENDIF
  56   VECTOR_IF (-fn > 65000.0f, cond)
  57     VECTOR_RETURN (v64sf_scalbnf_aux (x, VECTOR_INIT (-65000), __mask), cond);
  58   VECTOR_ENDIF
  59 #else
  60   VECTOR_IF (fn > 32000.0f, cond)
  61     VECTOR_RETURN (v64sf_scalbnf_aux (x, VECTOR_INIT (32000), __mask), cond);
  62   VECTOR_ENDIF
  63   VECTOR_IF (-fn > 32000.0f, cond)
  64     VECTOR_RETURN (v64sf_scalbnf_aux (x, VECTOR_INIT (-32000), __mask), cond);
  65   VECTOR_ENDIF
  66 #endif
  67   VECTOR_RETURN (v64sf_scalbnf_aux (x, __builtin_convertvector (fn, v64si), __mask),
  68                  NO_COND);
  69
  70   FUNCTION_RETURN;
  71 }
  72
  73 DEF_VARIANTS2 (scalbf, sf, sf)