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Diffstat (limited to 'newlib/libm/machine/spu/headers/round.h')
-rw-r--r-- | newlib/libm/machine/spu/headers/round.h | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/newlib/libm/machine/spu/headers/round.h b/newlib/libm/machine/spu/headers/round.h deleted file mode 100644 index 0943218b6..000000000 --- a/newlib/libm/machine/spu/headers/round.h +++ /dev/null @@ -1,85 +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 _ROUND_H_ -#define _ROUND_H_ 1 - -#include <spu_intrinsics.h> -#include "headers/vec_literal.h" - -/* Round the input to the nearest integer, rounding halfway - * cases away from zero. - */ -static __inline double _round(double x) -{ - 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_int4 exp, shift; - vec_uint4 sign = VEC_LITERAL(vec_uint4, 0x80000000, 0, 0x80000000, 0); - vec_uint4 or_mask, and_mask, mask, addend; - vec_double2 in, in_hi, out; - - in = spu_promote(x, 0); - - /* Add 0.5 (fixed precision to eliminate rounding issues) - */ - in_hi = spu_shuffle(in, in, splat_hi); - exp = spu_and(spu_rlmask((vec_int4)in_hi, -20), 0x7FF); - - shift = spu_sub(VEC_LITERAL(vec_int4, 1022, 1043, 1022, 1043), exp); - - addend = spu_and(spu_rlmask(VEC_LITERAL(vec_uint4, 0x100000, 0x80000000, - 0x100000, 0x80000000), shift), - spu_cmpgt((vec_uint4)spu_add(shift, -1), -33)); - - in = (vec_double2)spu_addx((vec_uint4)in, addend, - spu_rlqwbyte(spu_genc((vec_uint4)in, addend), 4)); - - /* Truncate the result. - */ - in_hi = spu_shuffle(in, in, splat_hi); - exp = spu_and(spu_rlmask((vec_int4)in_hi, -20), 0x7FF); - - shift = spu_sub(VEC_LITERAL(vec_int4, 1023, 1043, 1023, 1043), exp); - or_mask = spu_andc(spu_cmpgt(shift, 0), sign); - - - and_mask = spu_rlmask(VEC_LITERAL(vec_uint4, 0xFFFFF, -1, 0xFFFFF, -1), - shift); - mask = spu_or(spu_and(and_mask, spu_cmpgt(shift, -31)), or_mask); - - /* Apply the mask and return the result. - */ - out = spu_andc(in, (vec_double2)(mask)); - - return (spu_extract(out, 0)); -} -#endif /* _ROUND_H_ */ |