+++ /dev/null
-/* @(#)xdr_float.c 2.1 88/07/29 4.0 RPCSRC */
-/*
- * 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
- * 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
- */
-#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.
- *
- * 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
- * xdr.
- */
-
-#include <stdio.h>
-
-#include <rpc/types.h>
-#include <rpc/xdr.h>
-
-#if defined(__CYGWIN32__) || defined(__MINGW32__)
-#define vax
-#endif
-
-/*
- * NB: Not portable.
- * This routine works on Suns (Sky / 68000's) and Vaxen.
- */
-
-#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)
- register XDR *xdrs;
- register float *fp;
-{
-#if defined(vax)
- struct ieee_single is;
- struct vax_single vs, *vsp;
- struct sgl_limits *lim;
- int i;
-#endif
- switch (xdrs->x_op) {
-
- case XDR_ENCODE:
-#if !defined(vax)
- return (XDR_PUTLONG(xdrs, (long *)fp));
-#else
- 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 *)(void *)&is));
-#endif
-
- case XDR_DECODE:
-#if !defined(vax)
- return (XDR_GETLONG(xdrs, (long *)fp));
-#else
- vsp = (struct vax_single *)fp;
- if (!XDR_GETLONG(xdrs, (long *)(void *)&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);
-#endif
-
- case XDR_FREE:
- return (TRUE);
- }
- return (FALSE);
-}
-
-/*
- * 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)
- register XDR *xdrs;
- double *dp;
-{
- register long *lp;
-#if defined(vax)
- struct ieee_double id;
- struct vax_double vd;
- register struct dbl_limits *lim;
- int i;
-#endif
-
- switch (xdrs->x_op) {
-
- case XDR_ENCODE:
-#if !defined(vax)
- lp = (long *)dp;
-#else
- 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;
- lp = (long *)(void *)&id;
-#endif
-#if defined(__CYGWIN32__) || defined(__MINGW32__)
- return (XDR_PUTLONG(xdrs, lp+1) && XDR_PUTLONG(xdrs, lp));
-#else
- return (XDR_PUTLONG(xdrs, lp++) && XDR_PUTLONG(xdrs, lp));
-#endif
-
- case XDR_DECODE:
-#if !defined(vax)
- lp = (long *)dp;
-#if defined(__CYGWIN32__) || defined(__MINGW32__)
- return (XDR_GETLONG(xdrs, lp+1) && XDR_GETLONG(xdrs, lp));
-#else
- return (XDR_GETLONG(xdrs, lp++) && XDR_GETLONG(xdrs, lp));
-#endif
-#else
- lp = (long *)(void *)&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 *)(void *)&vd);
- return (TRUE);
-#endif
-
- case XDR_FREE:
- return (TRUE);
- }
- return (FALSE);
-}
git.annexia.org / portablexdr.git / blobdiff