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Diffstat (limited to 'libc/inet/rpc/xdr_float.c')
-rw-r--r--libc/inet/rpc/xdr_float.c240
1 files changed, 135 insertions, 105 deletions
diff --git a/libc/inet/rpc/xdr_float.c b/libc/inet/rpc/xdr_float.c
index 623682e0c..5b3802b56 100644
--- a/libc/inet/rpc/xdr_float.c
+++ b/libc/inet/rpc/xdr_float.c
@@ -6,32 +6,33 @@
* 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
* OR ANY PART THEREOF.
- *
+ *
* 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.
- *
+ *
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*/
-#define __FORCE_GLIBC
-#include <features.h>
+#if !defined(lint) && defined(SCCSIDS)
+static char sccsid[] = "@(#)xdr_float.c 1.12 87/08/11 Copyr 1984 Sun Micro";
+#endif
/*
- * xdr_float.c, Generic XDR routines impelmentation.
+ * xdr_float.c, Generic XDR routines implementation.
*
* Copyright (C) 1984, Sun Microsystems, Inc.
*
@@ -40,7 +41,12 @@
* xdr.
*/
+#define __FORCE_GLIBC
+#define _GNU_SOURCE
+#include <features.h>
+
#include <stdio.h>
+#include <endian.h>
#include <rpc/types.h>
#include <rpc/xdr.h>
@@ -50,26 +56,23 @@
* This routine works on Suns (Sky / 68000's) and Vaxen.
*/
-#ifdef __linux__
-/* cheat big time */
-#define sparc
-#endif
+#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;
+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;
+struct vax_single {
+ unsigned int mantissa1 : 7;
+ unsigned int exp : 8;
+ unsigned int sign : 1;
+ unsigned int mantissa2 : 16;
};
#define VAX_SNG_BIAS 0x81
@@ -79,22 +82,19 @@ 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 */
+ {{ 0x7f, 0xff, 0x0, 0xffff }, /* Max Vax */
+ { 0x0, 0xff, 0x0 }}, /* Max IEEE */
+ {{ 0x0, 0x0, 0x0, 0x0 }, /* Min Vax */
+ { 0x0, 0x0, 0x0 }} /* Min IEEE */
};
-#endif /* vax */
+#endif /* vax */
-bool_t xdr_float(xdrs, fp)
-register XDR *xdrs;
-register float *fp;
+bool_t
+xdr_float(xdrs, fp)
+ XDR *xdrs;
+ float *fp;
{
-#if !defined(mc68000) && !defined(sparc)
+#ifdef vax
struct ieee_single is;
struct vax_single vs, *vsp;
struct sgl_limits *lim;
@@ -103,14 +103,11 @@ register float *fp;
switch (xdrs->x_op) {
case XDR_ENCODE:
-#if defined(mc68000) || defined(sparc)
- return (XDR_PUTLONG(xdrs, (long *) fp));
-#else
- vs = *((struct vax_single *) fp);
+#ifdef vax
+ vs = *((struct vax_single *)fp);
for (i = 0, lim = sgl_limits;
-
- i < sizeof(sgl_limits) / sizeof(struct sgl_limits);
- i++, lim++) {
+ 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)) {
@@ -120,22 +117,27 @@ register float *fp;
}
is.exp = vs.exp - VAX_SNG_BIAS + IEEE_SNG_BIAS;
is.mantissa = (vs.mantissa1 << 16) | vs.mantissa2;
- shipit:
+ shipit:
is.sign = vs.sign;
- return (XDR_PUTLONG(xdrs, (long *) &is));
+ 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:
-#if defined(mc68000) || defined(sparc)
- return (XDR_GETLONG(xdrs, (long *) fp));
-#else
- vsp = (struct vax_single *) fp;
- if (!XDR_GETLONG(xdrs, (long *) &is))
+#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++) {
+ i < sizeof(sgl_limits)/sizeof(struct sgl_limits);
+ i++, lim++) {
if ((is.exp == lim->ieee.exp) &&
(is.mantissa == lim->ieee.mantissa)) {
*vsp = lim->s;
@@ -145,9 +147,20 @@ register float *fp;
vsp->exp = is.exp - IEEE_SNG_BIAS + VAX_SNG_BIAS;
vsp->mantissa2 = is.mantissa;
vsp->mantissa1 = (is.mantissa >> 16);
- doneit:
+ 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:
@@ -162,21 +175,21 @@ register float *fp;
#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;
+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;
+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
@@ -184,31 +197,26 @@ struct vax_double {
#define MASK(nbits) ((1 << nbits) - 1)
static struct dbl_limits {
- struct vax_double d;
- struct ieee_double ieee;
+ 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 */
+ {{ 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 */
+#endif /* vax */
-bool_t xdr_double(xdrs, dp)
-register XDR *xdrs;
-double *dp;
+bool_t
+xdr_double(xdrs, dp)
+ XDR *xdrs;
+ double *dp;
{
- register long *lp;
-
-#if !defined(mc68000) && !defined(sparc)
- struct ieee_double id;
- struct vax_double vd;
+#ifdef vax
+ struct ieee_double id;
+ struct vax_double vd;
register struct dbl_limits *lim;
int i;
#endif
@@ -216,14 +224,11 @@ double *dp;
switch (xdrs->x_op) {
case XDR_ENCODE:
-#if defined(mc68000) || defined(sparc)
- lp = (long *) dp;
-#else
- vd = *((struct vax_double *) dp);
+#ifdef vax
+ vd = *((struct vax_double *)dp);
for (i = 0, lim = dbl_limits;
-
- i < sizeof(dbl_limits) / sizeof(struct dbl_limits);
- i++, lim++) {
+ 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) &&
@@ -236,25 +241,34 @@ double *dp;
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:
+ (vd.mantissa3 << 13) |
+ ((vd.mantissa4 >> 3) & MASK(13));
+ shipit:
id.sign = vd.sign;
- lp = (long *) &id;
+ dp = (double *)&id;
#endif
- return (XDR_PUTLONG(xdrs, lp++) && XDR_PUTLONG(xdrs, lp));
+ 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:
-#if defined(mc68000) || defined(sparc)
- lp = (long *) dp;
- return (XDR_GETLONG(xdrs, lp++) && XDR_GETLONG(xdrs, lp));
-#else
- lp = (long *) &id;
+#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++) {
+ 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)) {
@@ -265,13 +279,29 @@ double *dp;
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);
+ (id.mantissa2 >> 29);
vd.mantissa3 = (id.mantissa2 >> 13);
vd.mantissa4 = (id.mantissa2 << 3);
- doneit:
+ doneit:
vd.sign = id.sign;
- *dp = *((double *) &vd);
+ *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:
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 23:15:08 +0000