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Diffstat (limited to 'newlib/libm/machine/spu/headers/atan2d2.h')
| -rw-r--r-- | newlib/libm/machine/spu/headers/atan2d2.h | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/newlib/libm/machine/spu/headers/atan2d2.h b/newlib/libm/machine/spu/headers/atan2d2.h deleted file mode 100644 index 4a25756d3..000000000 --- a/newlib/libm/machine/spu/headers/atan2d2.h +++ /dev/null @@ -1,96 +0,0 @@ -/* -------------------------------------------------------------- */ -/* (C)Copyright 2007,2008, */ -/* International Business Machines Corporation */ -/* All Rights Reserved. */ -/* */ -/* Redistribution and use in source and binary forms, with or */ -/* without modification, are permitted provided that the */ -/* following conditions are met: */ -/* */ -/* - Redistributions of source code must retain the above copyright*/ -/* notice, this list of conditions and the following disclaimer. */ -/* */ -/* - Redistributions in binary form must reproduce the above */ -/* copyright notice, this list of conditions and the following */ -/* disclaimer in the documentation and/or other materials */ -/* provided with the distribution. */ -/* */ -/* - Neither the name of IBM Corporation nor the names of its */ -/* contributors may be used to endorse or promote products */ -/* derived from this software without specific prior written */ -/* permission. */ -/* */ -/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND */ -/* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, */ -/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ -/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */ -/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR */ -/* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */ -/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT */ -/* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */ -/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) */ -/* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */ -/* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR */ -/* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ -/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -/* -------------------------------------------------------------- */ -/* PROLOG END TAG zYx */ -#ifdef __SPU__ -#ifndef _ATAN2D2_H_ -#define _ATAN2D2_H_ 1 - -#include <spu_intrinsics.h> - -#include "divd2.h" -#include "atand2.h" - -/* - * FUNCTION - * vector double _atan2d2(vector double y, vector double x) - * - * DESCRIPTION - * The atan2d2 function returns a vector containing the angles - * whose tangets are y/x for the corresponding elements of the - * input vectors. - * - * The reason this function exists is to use the signs of the - * arguments to determine the quadrant of the result. Consider - * sin(x)/cos(x) on the domain (-pi, pi]. Four quadrants are - * defined by the signs of sin and cos on this domain. - * - * Special Cases: - * - If the corresponding elements of x and y are zero, the - * resulting element is undefined. - * - */ - -static __inline vector double _atan2d2(vector double y, vector double x) -{ - vec_uchar16 dup_even = ((vec_uchar16) { 0,1,2,3, 0,1,2,3, 8,9,10,11, 8,9,10,11 }); - vector double pi = spu_splats(SM_PI); - vector unsigned long long ones = spu_splats(0xFFFFFFFFFFFFFFFFull); - vector unsigned long long quad1; - vector unsigned long long quad4; - vector double result; - - vector unsigned long long xlt0; - vector unsigned long long yge0; - vector unsigned long long ylt0; - - xlt0 = (vec_ullong2)spu_rlmaska((vec_int4)spu_shuffle(x,x,dup_even), 31); - ylt0 = (vec_ullong2)spu_rlmaska((vec_int4)spu_shuffle(y,y,dup_even), 31); - yge0 = spu_xor(ylt0, ones); - - quad1 = spu_and(ylt0, xlt0); - quad4 = spu_and(yge0, xlt0); - - result = _atand2(_divd2(y,x)); - - result = spu_sel(result, spu_sub(result, pi), quad1); - result = spu_sel(result, spu_add(result, pi), quad4); - - return result; -} - -#endif /* _ATAN2D2_H_ */ -#endif /* __SPU__ */ |