darling-gdb/gas/flonum-copy.c
nobody 3a69b3aca6 This commit was manufactured by cvs2svn to create branch 'binutils'.
Cherrypick from master 1991-04-04 18:19:53 UTC K. Richard Pixley <rich@cygnus> 'Initial revision':
    gas/COPYING
    gas/ChangeLog
    gas/Makefile.in
    gas/README
    gas/app.c
    gas/as.c
    gas/as.h
    gas/atof-generic.c
    gas/bignum-copy.c
    gas/bignum.h
    gas/cond.c
    gas/config/atof-ieee.c
    gas/config/atof-vax.c
    gas/config/obj-aout.c
    gas/config/obj-aout.h
    gas/config/obj-bout.c
    gas/config/obj-bout.h
    gas/config/obj-coff.c
    gas/config/obj-coff.h
    gas/config/tc-a29k.c
    gas/config/tc-a29k.h
    gas/config/tc-generic.c
    gas/config/tc-generic.h
    gas/config/tc-i386.c
    gas/config/tc-i386.h
    gas/config/tc-i860.c
    gas/config/tc-i860.h
    gas/config/tc-i960.c
    gas/config/tc-i960.h
    gas/config/tc-m68851.h
    gas/config/tc-m68k.c
    gas/config/tc-m68k.h
    gas/config/tc-ns32k.c
    gas/config/tc-ns32k.h
    gas/config/tc-sparc.c
    gas/config/tc-sparc.h
    gas/config/tc-vax.c
    gas/config/tc-vax.h
    gas/config/te-generic.h
    gas/config/te-ic960.h
    gas/config/te-sun3.h
    gas/config/vax-inst.h
    gas/configure
    gas/configure.in
    gas/debug.c
    gas/expr.c
    gas/expr.h
    gas/flonum-copy.c
    gas/flonum-mult.c
    gas/flonum.h
    gas/frags.c
    gas/frags.h
    gas/hash.c
    gas/hash.h
    gas/input-file.c
    gas/input-file.h
    gas/input-scrub.c
    gas/messages.c
    gas/obj.h
    gas/output-file.c
    gas/output-file.h
    gas/read.c
    gas/read.h
    gas/struc-symbol.h
    gas/subsegs.c
    gas/subsegs.h
    gas/symbols.c
    gas/symbols.h
    gas/tc.h
    gas/write.c
    gas/write.h
    ld/ld.h
    ld/ldexp.c
    ld/ldfile.c
    ld/ldfile.h
    ld/ldlang.h
    ld/ldlex.h
    ld/ldmain.h
    ld/ldmisc.h
    ld/ldwrite.h
Cherrypick from master 1991-03-21 21:29:06 UTC David Henkel-Wallace <gumby@cygnus> 'Initial revision':
    ld/ldexp.h
    ld/ldgram.y
    ld/ldlang.c
    ld/ldlex.l
    ld/ldmain.c
    ld/ldmisc.c
    ld/ldwrite.c
Cherrypick from master 1991-01-17 15:34:55 UTC Roland Pesch <pesch@cygnus> 'Initial revision':
    gas/doc/as.texinfo
1991-04-04 18:19:54 +00:00

80 lines
2.3 KiB
C

/* flonum_copy.c - copy a flonum
Copyright (C) 1987, 1990, 1991 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 1, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GAS; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* static const char rcsid[] = "$Id$"; */
#include "as.h"
#ifdef USG
#define bzero(s,n) memset(s,0,n)
#define bcopy(from,to,n) memcpy(to,from,n)
#endif
void
flonum_copy (in, out)
FLONUM_TYPE * in;
FLONUM_TYPE * out;
{
int in_length; /* 0 origin */
int out_length; /* 0 origin */
out -> sign = in -> sign;
in_length = in -> leader - in -> low;
if (in_length < 0)
{
out -> leader = out -> low - 1; /* 0.0 case */
}
else
{
out_length = out -> high - out -> low;
/*
* Assume no GAPS in packing of littlenums.
* I.e. sizeof(array) == sizeof(element) * number_of_elements.
*/
if (in_length <= out_length)
{
{
/*
* For defensive programming, zero any high-order littlenums we don't need.
* This is destroying evidence and wasting time, so why bother???
*/
if (in_length < out_length)
{
bzero ((char *)(out->low + in_length + 1), out_length - in_length);
}
}
bcopy ((char *)(in->low), (char *)(out->low), (int)((in_length + 1) * sizeof(LITTLENUM_TYPE)));
out -> exponent = in -> exponent;
out -> leader = in -> leader - in -> low + out -> low;
}
else
{
int shorten; /* 1-origin. Number of littlenums we drop. */
shorten = in_length - out_length;
/* Assume out_length >= 0 ! */
bcopy ((char *)(in->low + shorten),(char *)( out->low), (int)((out_length + 1) * sizeof(LITTLENUM_TYPE)));
out -> leader = out -> high;
out -> exponent = in -> exponent + shorten;
}
} /* if any significant bits */
}
/* end: flonum_copy.c */