* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
* unrestricted use provided that this legend is included on all tape
* media and as a part of the software program in whole or part. Users
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user.
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
* Mountain View, California 94043
static char sccsid
[] = "@(#)xdr_float.c 1.2 85/03/14 Copyr 1984 Sun Micro";
* xdr_float.c, Generic XDR routines impelmentation.
* Copyright (C) 1984, Sun Microsystems, Inc.
* These are the "floating point" xdr routines used to (de)serialize
* most common data items. See xdr.h for more info on the interface to
* This routine works on Suns (Sky / 68000's) and Vaxen.
/* What IEEE single precision floating point looks like on a Vax */
unsigned int mantissa
: 23;
/* Vax single precision floating point */
unsigned int mantissa1
: 7;
unsigned int mantissa2
: 16;
#define VAX_SNG_BIAS 0x81
#define IEEE_SNG_BIAS 0x7f
static struct sgl_limits
{
{{ 0x3f, 0xff, 0x0, 0xffff }, /* Max Vax */
{ 0x0, 0xff, 0x0 }}, /* Max IEEE */
{{ 0x0, 0x0, 0x0, 0x0 }, /* Min Vax */
{ 0x0, 0x0, 0x0 }} /* Min IEEE */
struct vax_single vs
, *vsp
;
return (XDR_PUTLONG(xdrs
, (long *)fp
));
vs
= *((struct vax_single
*)fp
);
for (i
= 0, lim
= sgl_limits
;
i
< sizeof(sgl_limits
)/sizeof(struct sgl_limits
);
if ((vs
.mantissa2
== lim
->s
.mantissa2
) &&
(vs
.exp
== lim
->s
.exp
) &&
(vs
.mantissa1
== lim
->s
.mantissa1
)) {
is
.exp
= vs
.exp
- VAX_SNG_BIAS
+ IEEE_SNG_BIAS
;
is
.mantissa
= (vs
.mantissa1
<< 16) | vs
.mantissa2
;
return (XDR_PUTLONG(xdrs
, (long *)&is
));
return (XDR_GETLONG(xdrs
, (long *)fp
));
vsp
= (struct vax_single
*)fp
;
if (!XDR_GETLONG(xdrs
, (long *)&is
))
for (i
= 0, lim
= sgl_limits
;
i
< sizeof(sgl_limits
)/sizeof(struct sgl_limits
);
if ((is
.exp
== lim
->ieee
.exp
) &&
(is
.mantissa
= lim
->ieee
.mantissa
)) {
vsp
->exp
= is
.exp
- IEEE_SNG_BIAS
+ VAX_SNG_BIAS
;
vsp
->mantissa2
= is
.mantissa
;
vsp
->mantissa1
= (is
.mantissa
>> 16);
* This routine works on Suns (Sky / 68000's) and Vaxen.
/* What IEEE double precision floating point looks like on a Vax */
unsigned int mantissa1
: 20;
unsigned int mantissa2
: 32;
/* Vax double precision floating point */
unsigned int mantissa1
: 7;
unsigned int mantissa2
: 16;
unsigned int mantissa3
: 16;
unsigned int mantissa4
: 16;
#define VAX_DBL_BIAS 0x81
#define IEEE_DBL_BIAS 0x3ff
#define MASK(nbits) ((1 << nbits) - 1)
static struct dbl_limits
{
{{ 0x7f, 0xff, 0x0, 0xffff, 0xffff, 0xffff }, /* Max Vax */
{ 0x0, 0x7ff, 0x0, 0x0 }}, /* Max IEEE */
{{ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, /* Min Vax */
{ 0x0, 0x0, 0x0, 0x0 }} /* Min IEEE */
register struct dbl_limits
*lim
;
vd
= *((struct vax_double
*)dp
);
for (i
= 0, lim
= dbl_limits
;
i
< sizeof(dbl_limits
)/sizeof(struct dbl_limits
);
if ((vd
.mantissa4
== lim
->d
.mantissa4
) &&
(vd
.mantissa3
== lim
->d
.mantissa3
) &&
(vd
.mantissa2
== lim
->d
.mantissa2
) &&
(vd
.mantissa1
== lim
->d
.mantissa1
) &&
(vd
.exp
== lim
->d
.exp
)) {
id
.exp
= vd
.exp
- VAX_DBL_BIAS
+ IEEE_DBL_BIAS
;
id
.mantissa1
= (vd
.mantissa1
<< 13) | (vd
.mantissa2
>> 3);
id
.mantissa2
= ((vd
.mantissa2
& MASK(3)) << 29) |
((vd
.mantissa4
>> 3) & MASK(13));
return (XDR_PUTLONG(xdrs
, lp
++) && XDR_PUTLONG(xdrs
, lp
));
return (XDR_GETLONG(xdrs
, lp
++) && XDR_GETLONG(xdrs
, lp
));
if (!XDR_GETLONG(xdrs
, lp
++) || !XDR_GETLONG(xdrs
, lp
))
for (i
= 0, lim
= dbl_limits
;
i
< sizeof(dbl_limits
)/sizeof(struct dbl_limits
);
if ((id
.mantissa2
== lim
->ieee
.mantissa2
) &&
(id
.mantissa1
== lim
->ieee
.mantissa1
) &&
(id
.exp
== lim
->ieee
.exp
)) {
vd
.exp
= id
.exp
- IEEE_DBL_BIAS
+ VAX_DBL_BIAS
;
vd
.mantissa1
= (id
.mantissa1
>> 13);
vd
.mantissa2
= ((id
.mantissa1
& MASK(13)) << 3) |
vd
.mantissa3
= (id
.mantissa2
>> 13);
vd
.mantissa4
= (id
.mantissa2
<< 3);