44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/* Move half-word library function.
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Copyright (C) 2000 Free Software Foundation, Inc.
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Contributed by Red Hat, Inc.
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This file is part of GNU CC.
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GNU CC is free software ; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation * either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY ; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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void
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__cmovh (short *dest, const short *src, unsigned len)
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{
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unsigned i;
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unsigned num = len >> 1;
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char *dest_byte = (char *)dest;
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const char *src_byte = (const char *)src;
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if (dest_byte < src_byte || dest_byte > src_byte+len)
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{
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for (i = 0; i < num; i++)
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dest[i] = src[i];
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if ((len & 1) != 0)
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dest_byte[len-1] = src_byte[len-1];
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}
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else
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{
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while (len-- > 0)
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dest_byte[len] = src_byte[len];
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}
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}
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