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Diffstat (limited to 'newlib/libm/machine/spu/headers/floord2.h')
| -rw-r--r-- | newlib/libm/machine/spu/headers/floord2.h | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/newlib/libm/machine/spu/headers/floord2.h b/newlib/libm/machine/spu/headers/floord2.h deleted file mode 100644 index 247884d51..000000000 --- a/newlib/libm/machine/spu/headers/floord2.h +++ /dev/null @@ -1,110 +0,0 @@ -/* -------------------------------------------------------------- */ -/* (C)Copyright 2001,2008, */ -/* International Business Machines Corporation, */ -/* Sony Computer Entertainment, Incorporated, */ -/* Toshiba 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 _FLOORD2_H_ -#define _FLOORD2_H_ 1 - -#include <spu_intrinsics.h> - - -/* - * FUNCTION - * vector double _floord2(vector double x) - * - * DESCRIPTION - * The _floord2 function rounds the elements of an vector double - * input vector downwards to their nearest integer representable - * as a double. - * - */ -static __inline vector double _floord2(vector double in) -{ - vec_uchar16 swap_words = (vec_uchar16) { 4,5,6,7, 0,1,2,3, 12,13,14,15, 8,9,10,11 }; - vec_uchar16 splat_hi = (vec_uchar16) { 0,1,2,3, 0,1,2,3, 8,9,10,11, 8,9,10,11 }; - vec_uint4 one = (vec_uint4) { 0, 1, 0, 1 }; - vec_int4 exp, shift; - vec_uint4 mask, mask_1, frac_mask, addend, insert, pos, equal0; - vec_ullong2 sign = spu_splats(0x8000000000000000ULL); - vec_double2 in_hi, out; - vec_double2 minus_one = spu_splats(-1.0); - - /* This function generates the following component - * based upon the inputs. - * - * mask = bits of the input that need to be replaced. - * insert = value of the bits that need to be replaced - * addend = value to be added to perform function. - * - * These are applied as follows:. - * - * out = ((in & mask) | insert) + addend - */ - in_hi = spu_shuffle(in, in, splat_hi); - pos = spu_cmpgt((vec_int4)in_hi, -1); - exp = spu_and(spu_rlmask((vec_int4)in_hi, -20), 0x7FF); - shift = spu_sub(((vec_int4) { 1023, 1043, 1023, 1043 } ), exp); - - /* clamp shift to the range 0 to -31. - */ - shift = spu_sel(spu_splats(-32), spu_andc(shift, (vec_int4)spu_cmpgt(shift, 0)), spu_cmpgt(shift, -32)); - - frac_mask = spu_rlmask(((vec_uint4) { 0xFFFFF, -1, 0xFFFFF, -1 } ), shift); - mask = spu_orc(frac_mask, spu_cmpgt(exp, 0x3FE)); - - /* addend = ((in & mask) && (in >= 0)) ? mask+1 : 0 - */ - mask_1 = spu_addx(mask, one, spu_rlqwbyte(spu_genc(mask, one), 4)); - - equal0 = spu_cmpeq(spu_and((vec_uint4)in, mask), 0); - addend = spu_andc(spu_andc(mask_1, pos), spu_and(equal0, spu_shuffle(equal0, equal0, swap_words))); - - insert = spu_andc(spu_andc((vec_uint4)minus_one, pos), - spu_cmpgt((vec_uint4)spu_add(exp, -1), 1022)); - - in = spu_sel(in, (vec_double2)insert, spu_andc((vec_ullong2)mask, sign)); - out = (vec_double2)spu_addx((vec_uint4)in, addend, spu_rlqwbyte(spu_genc((vec_uint4)in, addend), 4)); - - return (out); -} - -#endif /* _FLOORD2_H_ */ -#endif /* __SPU__ */ |