mirror of
https://sourceware.org/git/glibc.git
synced 2024-09-20 00:19:57 +00:00
021db4be6f
New configure option --enable-obsolete-rpc makes the deprecated RPC headers and functions available at compile time as they were before version 2.14. This option will be removed at some time in the future after the TI-RPC library becomes fully sufficient for the needs of existing applications.
304 lines
7.8 KiB
C
304 lines
7.8 KiB
C
/*
|
|
* xdr_float.c, Generic XDR routines implementation.
|
|
*
|
|
* Copyright (c) 2010, Oracle America, Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials
|
|
* provided with the distribution.
|
|
* * Neither the name of the "Oracle America, Inc." nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
|
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* 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
|
|
* xdr.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <endian.h>
|
|
|
|
#include <rpc/types.h>
|
|
#include <rpc/xdr.h>
|
|
|
|
/*
|
|
* NB: Not portable.
|
|
* This routine works on Suns (Sky / 68000's) and Vaxen.
|
|
*/
|
|
|
|
#define LSW (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
|
|
|
|
#ifdef vax
|
|
|
|
/* What IEEE single precision floating point looks like on a Vax */
|
|
struct ieee_single {
|
|
unsigned int mantissa: 23;
|
|
unsigned int exp : 8;
|
|
unsigned int sign : 1;
|
|
};
|
|
|
|
/* Vax single precision floating point */
|
|
struct vax_single {
|
|
unsigned int mantissa1 : 7;
|
|
unsigned int exp : 8;
|
|
unsigned int sign : 1;
|
|
unsigned int mantissa2 : 16;
|
|
};
|
|
|
|
#define VAX_SNG_BIAS 0x81
|
|
#define IEEE_SNG_BIAS 0x7f
|
|
|
|
static struct sgl_limits {
|
|
struct vax_single s;
|
|
struct ieee_single ieee;
|
|
} sgl_limits[2] = {
|
|
{{ 0x7f, 0xff, 0x0, 0xffff }, /* Max Vax */
|
|
{ 0x0, 0xff, 0x0 }}, /* Max IEEE */
|
|
{{ 0x0, 0x0, 0x0, 0x0 }, /* Min Vax */
|
|
{ 0x0, 0x0, 0x0 }} /* Min IEEE */
|
|
};
|
|
#endif /* vax */
|
|
|
|
bool_t
|
|
xdr_float(xdrs, fp)
|
|
XDR *xdrs;
|
|
float *fp;
|
|
{
|
|
#ifdef vax
|
|
struct ieee_single is;
|
|
struct vax_single vs, *vsp;
|
|
struct sgl_limits *lim;
|
|
int i;
|
|
#endif
|
|
switch (xdrs->x_op) {
|
|
|
|
case XDR_ENCODE:
|
|
#ifdef vax
|
|
vs = *((struct vax_single *)fp);
|
|
for (i = 0, lim = sgl_limits;
|
|
i < sizeof(sgl_limits)/sizeof(struct sgl_limits);
|
|
i++, lim++) {
|
|
if ((vs.mantissa2 == lim->s.mantissa2) &&
|
|
(vs.exp == lim->s.exp) &&
|
|
(vs.mantissa1 == lim->s.mantissa1)) {
|
|
is = lim->ieee;
|
|
goto shipit;
|
|
}
|
|
}
|
|
is.exp = vs.exp - VAX_SNG_BIAS + IEEE_SNG_BIAS;
|
|
is.mantissa = (vs.mantissa1 << 16) | vs.mantissa2;
|
|
shipit:
|
|
is.sign = vs.sign;
|
|
return (XDR_PUTLONG(xdrs, (long *)&is));
|
|
#else
|
|
if (sizeof(float) == sizeof(long))
|
|
return (XDR_PUTLONG(xdrs, (long *)fp));
|
|
else if (sizeof(float) == sizeof(int)) {
|
|
long tmp = *(int *)fp;
|
|
return (XDR_PUTLONG(xdrs, &tmp));
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
case XDR_DECODE:
|
|
#ifdef vax
|
|
vsp = (struct vax_single *)fp;
|
|
if (!XDR_GETLONG(xdrs, (long *)&is))
|
|
return (FALSE);
|
|
for (i = 0, lim = sgl_limits;
|
|
i < sizeof(sgl_limits)/sizeof(struct sgl_limits);
|
|
i++, lim++) {
|
|
if ((is.exp == lim->ieee.exp) &&
|
|
(is.mantissa == lim->ieee.mantissa)) {
|
|
*vsp = lim->s;
|
|
goto doneit;
|
|
}
|
|
}
|
|
vsp->exp = is.exp - IEEE_SNG_BIAS + VAX_SNG_BIAS;
|
|
vsp->mantissa2 = is.mantissa;
|
|
vsp->mantissa1 = (is.mantissa >> 16);
|
|
doneit:
|
|
vsp->sign = is.sign;
|
|
return (TRUE);
|
|
#else
|
|
if (sizeof(float) == sizeof(long))
|
|
return (XDR_GETLONG(xdrs, (long *)fp));
|
|
else if (sizeof(float) == sizeof(int)) {
|
|
long tmp;
|
|
if (XDR_GETLONG(xdrs, &tmp)) {
|
|
*(int *)fp = tmp;
|
|
return (TRUE);
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
case XDR_FREE:
|
|
return (TRUE);
|
|
}
|
|
return (FALSE);
|
|
}
|
|
libc_hidden_nolink_sunrpc (xdr_float, GLIBC_2_0)
|
|
|
|
/*
|
|
* This routine works on Suns (Sky / 68000's) and Vaxen.
|
|
*/
|
|
|
|
#ifdef vax
|
|
/* What IEEE double precision floating point looks like on a Vax */
|
|
struct ieee_double {
|
|
unsigned int mantissa1 : 20;
|
|
unsigned int exp : 11;
|
|
unsigned int sign : 1;
|
|
unsigned int mantissa2 : 32;
|
|
};
|
|
|
|
/* Vax double precision floating point */
|
|
struct vax_double {
|
|
unsigned int mantissa1 : 7;
|
|
unsigned int exp : 8;
|
|
unsigned int sign : 1;
|
|
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 {
|
|
struct vax_double d;
|
|
struct ieee_double ieee;
|
|
} dbl_limits[2] = {
|
|
{{ 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 */
|
|
};
|
|
|
|
#endif /* vax */
|
|
|
|
|
|
bool_t
|
|
xdr_double(xdrs, dp)
|
|
XDR *xdrs;
|
|
double *dp;
|
|
{
|
|
#ifdef vax
|
|
struct ieee_double id;
|
|
struct vax_double vd;
|
|
register struct dbl_limits *lim;
|
|
int i;
|
|
#endif
|
|
|
|
switch (xdrs->x_op) {
|
|
|
|
case XDR_ENCODE:
|
|
#ifdef vax
|
|
vd = *((struct vax_double *)dp);
|
|
for (i = 0, lim = dbl_limits;
|
|
i < sizeof(dbl_limits)/sizeof(struct dbl_limits);
|
|
i++, lim++) {
|
|
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 = lim->ieee;
|
|
goto shipit;
|
|
}
|
|
}
|
|
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.mantissa3 << 13) |
|
|
((vd.mantissa4 >> 3) & MASK(13));
|
|
shipit:
|
|
id.sign = vd.sign;
|
|
dp = (double *)&id;
|
|
#endif
|
|
if (2*sizeof(long) == sizeof(double)) {
|
|
long *lp = (long *)dp;
|
|
return (XDR_PUTLONG(xdrs, lp+!LSW) &&
|
|
XDR_PUTLONG(xdrs, lp+LSW));
|
|
} else if (2*sizeof(int) == sizeof(double)) {
|
|
int *ip = (int *)dp;
|
|
long tmp[2];
|
|
tmp[0] = ip[!LSW];
|
|
tmp[1] = ip[LSW];
|
|
return (XDR_PUTLONG(xdrs, tmp) &&
|
|
XDR_PUTLONG(xdrs, tmp+1));
|
|
}
|
|
break;
|
|
|
|
case XDR_DECODE:
|
|
#ifdef vax
|
|
lp = (long *)&id;
|
|
if (!XDR_GETLONG(xdrs, lp++) || !XDR_GETLONG(xdrs, lp))
|
|
return (FALSE);
|
|
for (i = 0, lim = dbl_limits;
|
|
i < sizeof(dbl_limits)/sizeof(struct dbl_limits);
|
|
i++, lim++) {
|
|
if ((id.mantissa2 == lim->ieee.mantissa2) &&
|
|
(id.mantissa1 == lim->ieee.mantissa1) &&
|
|
(id.exp == lim->ieee.exp)) {
|
|
vd = lim->d;
|
|
goto doneit;
|
|
}
|
|
}
|
|
vd.exp = id.exp - IEEE_DBL_BIAS + VAX_DBL_BIAS;
|
|
vd.mantissa1 = (id.mantissa1 >> 13);
|
|
vd.mantissa2 = ((id.mantissa1 & MASK(13)) << 3) |
|
|
(id.mantissa2 >> 29);
|
|
vd.mantissa3 = (id.mantissa2 >> 13);
|
|
vd.mantissa4 = (id.mantissa2 << 3);
|
|
doneit:
|
|
vd.sign = id.sign;
|
|
*dp = *((double *)&vd);
|
|
return (TRUE);
|
|
#else
|
|
if (2*sizeof(long) == sizeof(double)) {
|
|
long *lp = (long *)dp;
|
|
return (XDR_GETLONG(xdrs, lp+!LSW) &&
|
|
XDR_GETLONG(xdrs, lp+LSW));
|
|
} else if (2*sizeof(int) == sizeof(double)) {
|
|
int *ip = (int *)dp;
|
|
long tmp[2];
|
|
if (XDR_GETLONG(xdrs, tmp+!LSW) &&
|
|
XDR_GETLONG(xdrs, tmp+LSW)) {
|
|
ip[0] = tmp[0];
|
|
ip[1] = tmp[1];
|
|
return (TRUE);
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
case XDR_FREE:
|
|
return (TRUE);
|
|
}
|
|
return (FALSE);
|
|
}
|
|
libc_hidden_nolink_sunrpc (xdr_double, GLIBC_2_0)
|