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55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/* Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc.
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This file is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your option)
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any later version.
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This file is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <spu_intrinsics.h>
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const unsigned char __didf_scale[16] __attribute__ ((__aligned__ (16))) = {
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0x00, 0x00, 0x04, 0x3e,
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0x00, 0x00, 0x04, 0x1e,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00
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};
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const unsigned char __didf_pat[16] __attribute__ ((__aligned__ (16))) = {
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0x02, 0x03, 0x10, 0x11,
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0x12, 0x13, 0x80, 0x80,
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0x06, 0x07, 0x14, 0x15,
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0x16, 0x17, 0x80, 0x80
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};
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/* double __float_unsdidf (unsigned long long int)
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Construct two exact doubles representing the high and low parts (in
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parallel), then add them. */
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qword __float_unsdidf (qword DI);
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qword
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__float_unsdidf (qword DI)
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{
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qword t0, t1, t2, t3, t4, t5, t6, t7, t8;
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t0 = si_clz (DI);
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t1 = si_shl (DI, t0);
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t2 = si_ceqi (t0, 32);
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t3 = si_sf (t0, *(const qword *) __didf_scale);
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t4 = si_a (t1, t1);
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t5 = si_andc (t3, t2);
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t6 = si_shufb (t5, t4, *(const qword *) __didf_pat);
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t7 = si_shlqbii (t6, 4);
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t8 = si_shlqbyi (t7, 8);
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return si_dfa (t7, t8);
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}
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