diff options
Diffstat (limited to 'newlib/libm/machine/spu/headers/fmod.h')
| -rw-r--r-- | newlib/libm/machine/spu/headers/fmod.h | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/newlib/libm/machine/spu/headers/fmod.h b/newlib/libm/machine/spu/headers/fmod.h deleted file mode 100644 index 0236da187..000000000 --- a/newlib/libm/machine/spu/headers/fmod.h +++ /dev/null @@ -1,166 +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 _FMOD_H_ -#define _FMOD_H_ 1 - -#include <spu_intrinsics.h> -#include <errno.h> -#include "headers/vec_literal.h" - -/* This implementation returns zero if y is a denorm or zero. - */ -static __inline double _fmod(double x, double y) -{ - int n, shift; - 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 propagate = VEC_LITERAL(vec_uchar16, 4,5,6,7, 192,192,192,192, 12,13,14,15, 192,192,192,192); - 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 vx, vy, z; - vec_uint4 x_hi, y_hi; - vec_uint4 abs_x, abs_y; - vec_uint4 exp_x, exp_y; - vec_uint4 zero_x, zero_y; - vec_uint4 logb_x, logb_y; - vec_uint4 mant_x, mant_y; - vec_uint4 normal, norm, denorm; - vec_uint4 result, result0, resultx, cnt, sign, borrow; - vec_uint4 lsb = (vec_uint4)(VEC_SPLAT_U64(0x0000000000000001ULL)); - vec_uint4 sign_mask = (vec_uint4)(VEC_SPLAT_U64(0x8000000000000000ULL)); - vec_uint4 implied_1 = (vec_uint4)(VEC_SPLAT_U64(0x0010000000000000ULL)); - vec_uint4 mant_mask = (vec_uint4)(VEC_SPLAT_U64(0x000FFFFFFFFFFFFFULL)); - vec_ullong2 domain; - vec_int4 verrno; - vec_double2 vc = { 0.0, 0.0 }; - vec_int4 fail = { EDOM, EDOM, EDOM, EDOM }; - - vx = (vec_uint4)spu_promote(x, 0); - vy = (vec_uint4)spu_promote(y, 0); - - abs_x = spu_andc(vx, sign_mask); - abs_y = spu_andc(vy, sign_mask); - - sign = spu_and(vx, sign_mask); - - x_hi = spu_shuffle(abs_x, abs_x, splat_hi); - y_hi = spu_shuffle(abs_y, abs_y, splat_hi); - - /* Determine ilogb of abs_x and abs_y and - * extract the mantissas (mant_x, mant_y) - */ - exp_x = spu_rlmask(x_hi, -20); - exp_y = spu_rlmask(y_hi, -20); - - resultx = spu_cmpgt(y_hi, x_hi); - - zero_x = spu_cmpeq(exp_x, 0); - zero_y = spu_cmpeq(exp_y, 0); - - logb_x = spu_add(exp_x, -1023); - logb_y = spu_add(exp_y, -1023); - - mant_x = spu_andc(spu_sel(implied_1, abs_x, mant_mask), zero_x); - mant_y = spu_andc(spu_sel(implied_1, abs_y, mant_mask), zero_y); - - /* Compute fixed point fmod of mant_x and mant_y. Set the flag, - * result0, to all ones if we detect that the final result is - * ever 0. - */ - result0 = spu_or(zero_x, zero_y); - - n = spu_extract(spu_sub(logb_x, logb_y), 0); - - while (n-- > 0) { - borrow = spu_genb(mant_x, mant_y); - borrow = spu_shuffle(borrow, borrow, propagate); - z = spu_subx(mant_x, mant_y, borrow); - - result0 = spu_or(spu_cmpeq(spu_or(z, spu_shuffle(z, z, swap_words)), 0), result0); - - mant_x = spu_sel(spu_slqw(mant_x, 1), spu_andc(spu_slqw(z, 1), lsb), - spu_cmpgt((vec_int4)spu_shuffle(z, z, splat_hi), -1)); - } - - borrow = spu_genb(mant_x, mant_y); - borrow = spu_shuffle(borrow, borrow, propagate); - z = spu_subx(mant_x, mant_y, borrow); - - mant_x = spu_sel(mant_x, z, - spu_cmpgt((vec_int4)spu_shuffle(z, z, splat_hi), -1)); - mant_x = spu_andc(mant_x, VEC_LITERAL(vec_uint4, 0,0,-1,-1)); - - result0 = spu_or(spu_cmpeq(spu_or(mant_x, spu_shuffle(mant_x, mant_x, swap_words)), 0), result0); - - /* Convert the result back to floating point and restore - * the sign. If we flagged the result to be zero (result0), - * zero it. If we flagged the result to equal its input x, - * (resultx) then return x. - * - * Double precision generates a denorm for an output. - */ - cnt = spu_cntlz(mant_x); - cnt = spu_add(cnt, spu_and(spu_rlqwbyte(cnt, 4), spu_cmpeq(cnt, 32))); - cnt = spu_add(spu_shuffle(cnt, cnt, splat_hi), -11); - - shift = spu_extract(exp_y, 0) - 1; - denorm = spu_slqwbytebc(spu_slqw(mant_x, shift), shift); - - exp_y = spu_sub(exp_y, cnt); - - normal = spu_cmpgt((vec_int4)exp_y, 0); - - /* Normalize normal results, denormalize denorm results. - */ - shift = spu_extract(cnt, 0); - norm = spu_slqwbytebc(spu_slqw(spu_andc(mant_x, VEC_LITERAL(vec_uint4, 0x00100000, 0, -1, -1)), shift), shift); - - mant_x = spu_sel(denorm, norm, normal); - - exp_y = spu_and(spu_rl(exp_y, 20), normal); - - result = spu_sel(exp_y, spu_or(sign, mant_x), VEC_LITERAL(vec_uint4, 0x800FFFFF, -1, 0x800FFFFF, -1)); - - result = spu_sel(spu_andc(result, spu_rlmask(result0, -1)), vx, - resultx); - -#ifndef _IEEE_LIBM - /* - * If y is zero, set errno to EDOM - */ - domain = spu_cmpeq(vc, (vec_double2) vy); - verrno = spu_splats(errno); - errno = spu_extract(spu_sel(verrno, fail, (vector unsigned int) domain), 0); -#endif - - return (spu_extract((vec_double2)result, 0)); -} -#endif /* _FMOD_H_ */ |