mirror of
https://github.com/golang/go
synced 2024-10-04 13:21:22 -06:00
9aad9fef76
these guys really really want long to be 32-bits, so ,s/long/int32/ (and then manual fixup). still passes all tests. (i started out looking for just those longs that needed to be int32 instead, and it was just too hard to track them down one by one.) the longs were rare enough that i don't think it will cause integration problems. R=ken OCL=13787 CL=13789
120 lines
2.5 KiB
C
120 lines
2.5 KiB
C
// Inferno utils/cc/bits.c
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// http://code.google.com/p/inferno-os/source/browse/utils/cc/bits.c
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//
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// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
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// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
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// Portions Copyright © 1997-1999 Vita Nuova Limited
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// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
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// Portions Copyright © 2004,2006 Bruce Ellis
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// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
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// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
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// Portions Copyright © 2009 The Go Authors. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#include "cc.h"
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Bits
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bor(Bits a, Bits b)
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{
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Bits c;
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int i;
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for(i=0; i<BITS; i++)
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c.b[i] = a.b[i] | b.b[i];
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return c;
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}
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Bits
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band(Bits a, Bits b)
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{
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Bits c;
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int i;
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for(i=0; i<BITS; i++)
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c.b[i] = a.b[i] & b.b[i];
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return c;
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}
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/*
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Bits
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bnot(Bits a)
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{
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Bits c;
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int i;
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for(i=0; i<BITS; i++)
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c.b[i] = ~a.b[i];
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return c;
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}
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*/
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int
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bany(Bits *a)
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{
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int i;
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for(i=0; i<BITS; i++)
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if(a->b[i])
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return 1;
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return 0;
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}
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int
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beq(Bits a, Bits b)
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{
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int i;
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for(i=0; i<BITS; i++)
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if(a.b[i] != b.b[i])
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return 0;
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return 1;
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}
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int
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bnum(Bits a)
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{
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int i;
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int32 b;
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for(i=0; i<BITS; i++)
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if(b = a.b[i])
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return 32*i + bitno(b);
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diag(Z, "bad in bnum");
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return 0;
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}
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Bits
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blsh(uint n)
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{
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Bits c;
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c = zbits;
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c.b[n/32] = 1L << (n%32);
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return c;
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}
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int
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bset(Bits a, uint n)
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{
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if(a.b[n/32] & (1L << (n%32)))
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return 1;
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return 0;
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}
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