/* flonum_copy.c - copy a flonum
Copyright (C) 1987 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)
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. */
#define bzero(s,n) memset(s,0,n)
#define bcopy(from,to,n) memcpy(to,from,n)
int in_length
; /* 0 origin */
int out_length
; /* 0 origin */
out
-> sign
= in
-> sign
;
in_length
= in
-> leader
- in
-> low
;
out
-> leader
= out
-> low
- 1; /* 0.0 case */
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
;
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 */