diff options
Diffstat (limited to 'lib/libc/xdr/xdr_float.c')
| -rw-r--r-- | lib/libc/xdr/xdr_float.c | 314 |
1 files changed, 0 insertions, 314 deletions
diff --git a/lib/libc/xdr/xdr_float.c b/lib/libc/xdr/xdr_float.c deleted file mode 100644 index b8c8f60..0000000 --- a/lib/libc/xdr/xdr_float.c +++ /dev/null @@ -1,314 +0,0 @@ -/* - * 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(LIBC_SCCS) && !defined(lint) -/*static char *sccsid = "from: @(#)xdr_float.c 1.12 87/08/11 Copyr 1984 Sun Micro";*/ -/*static char *sccsid = "from: @(#)xdr_float.c 2.1 88/07/29 4.0 RPCSRC";*/ -static char *rcsid = "$Id: xdr_float.c,v 1.3 1996/12/30 14:07:08 peter Exp $"; -#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 <sys/types.h> -#include <sys/param.h> -#include <rpc/types.h> -#include <rpc/xdr.h> - -/* - * NB: Not portable. - * This routine works on machines with IEEE754 FP and Vaxen. - */ - -#if defined(__m68k__) || defined(__sparc__) || defined(__i386__) || \ - defined(__mips__) || defined(__ns32k__) || defined(__alpha__) || \ - defined(__arm32__) || defined(__ppc__) -#include <machine/endian.h> -#define IEEEFP -#endif - -#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; -{ -#ifdef IEEEFP - bool_t rv; - long tmpl; -#else - struct ieee_single is; - struct vax_single vs, *vsp; - struct sgl_limits *lim; - int i; -#endif - switch (xdrs->x_op) { - - case XDR_ENCODE: -#ifdef IEEEFP - tmpl = *(int32_t *)fp; - return (XDR_PUTLONG(xdrs, &tmpl)); -#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 *)&is)); -#endif - - case XDR_DECODE: -#ifdef IEEEFP - rv = XDR_GETLONG(xdrs, &tmpl); - *(int32_t *)fp = tmpl; - return (rv); -#else - 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); -#endif - - case XDR_FREE: - return (TRUE); - } - return (FALSE); -} - -#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; -{ -#ifdef IEEEFP - register int32_t *i32p; - bool_t rv; - long tmpl; -#else - register long *lp; - struct ieee_double id; - struct vax_double vd; - register struct dbl_limits *lim; - int i; -#endif - - switch (xdrs->x_op) { - - case XDR_ENCODE: -#ifdef IEEEFP - i32p = (int32_t *)dp; -#if BYTE_ORDER == BIG_ENDIAN - tmpl = *i32p++; - rv = XDR_PUTLONG(xdrs, &tmpl); - if (!rv) - return (rv); - tmpl = *i32p; - rv = XDR_PUTLONG(xdrs, &tmpl); -#else - tmpl = *(i32p+1); - rv = XDR_PUTLONG(xdrs, &tmpl); - if (!rv) - return (rv); - tmpl = *i32p; - rv = XDR_PUTLONG(xdrs, &tmpl); -#endif - return (rv); -#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 *)&id; - return (XDR_PUTLONG(xdrs, lp++) && XDR_PUTLONG(xdrs, lp)); -#endif - - case XDR_DECODE: -#ifdef IEEEFP - i32p = (int32_t *)dp; -#if BYTE_ORDER == BIG_ENDIAN - rv = XDR_GETLONG(xdrs, &tmpl); - *i32p++ = tmpl; - if (!rv) - return (rv); - rv = XDR_GETLONG(xdrs, &tmpl); - *i32p = tmpl; -#else - rv = XDR_GETLONG(xdrs, &tmpl); - *(i32p+1) = tmpl; - if (!rv) - return (rv); - rv = XDR_GETLONG(xdrs, &tmpl); - *i32p = tmpl; -#endif - return (rv); -#else - 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); -#endif - - case XDR_FREE: - return (TRUE); - } - return (FALSE); -} |
