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Diffstat (limited to 'newlib/libm/machine/spu/headers/floor.h')
| -rw-r--r-- | newlib/libm/machine/spu/headers/floor.h | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/newlib/libm/machine/spu/headers/floor.h b/newlib/libm/machine/spu/headers/floor.h deleted file mode 100644 index 6675b948d..000000000 --- a/newlib/libm/machine/spu/headers/floor.h +++ /dev/null @@ -1,94 +0,0 @@ -/* - (C) Copyright 2001,2006, - 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 names of the copyright holders nor the names of their - 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. -*/ -#ifndef _FLOOR_H_ -#define _FLOOR_H_ 1 - -#include <spu_intrinsics.h> -#include "headers/vec_literal.h" - -/* Round the input downwards to the nearest integer. - */ -static __inline double _floor(double x) -{ - vec_uchar16 swap_words = VEC_LITERAL(vec_uchar16, 4,5,6,7, 0,1,2,3, 12,13,14,15, 8,9,10,11); - vec_uchar16 splat_hi = VEC_LITERAL(vec_uchar16, 0,1,2,3,0,1,2,3, 8,9,10,11, 8,9,10,11); - vec_uint4 one = VEC_LITERAL(vec_uint4, 0, 1, 0, 1); - vec_int4 exp, shift; - vec_uint4 mask, mask_1, frac_mask, addend, insert, pos, equal0; - vec_ullong2 sign = VEC_SPLAT_U64(0x8000000000000000ULL); - vec_double2 in, in_hi, out; - vec_double2 minus_one = VEC_SPLAT_F64(-1.0); - - in = spu_promote(x, 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_LITERAL(vec_int4, 1023, 1043, 1023, 1043), exp); - - /* clamp shift to the range 0 to -31. - */ - shift = spu_sel(VEC_SPLAT_S32(-32), spu_andc(shift, (vec_int4)spu_cmpgt(shift, 0)), spu_cmpgt(shift, -32)); - - frac_mask = spu_rlmask(VEC_LITERAL(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 (spu_extract(out, 0)); -} -#endif /* _FLOOR_H_ */ |