xdr_float.c File Reference

#include <wintirpc.h>
#include "namespace.h"
#include <sys/types.h>
#include <stdio.h>
#include <rpc/types.h>
#include <rpc/xdr.h>
#include "un-namespace.h"

Include dependency graph for xdr_float.c:

Go to the source code of this file.

Macros
#define	IEEEFP

Functions
bool_t	xdr_float (XDR *xdrs, float *fp)
bool_t	xdr_double (XDR *xdrs, double *dp)

Macro Definition Documentation

IEEEFP

#define IEEEFP

Definition at line 90 of file xdr_float.c.

Function Documentation

xdr_double()

bool_t xdr_double	(	XDR *	xdrs,
		double *	dp
	)

Definition at line 197 of file xdr_float.c.

{
#ifdef IEEEFP
    int32_t *i32p;
    bool_t rv;
#else
    int32_t *lp;
    struct  ieee_double id;
    struct  vax_double vd;
    struct dbl_limits *lim;
    int i;
#endif
 
    switch (xdrs->x_op) {
 
    case XDR_ENCODE:
#ifdef IEEEFP
        i32p = (int32_t *)(void *)dp;
#if BYTE_ORDER == BIG_ENDIAN
        rv = XDR_PUTINT32(xdrs, i32p);
        if (!rv)
            return (rv);
        rv = XDR_PUTINT32(xdrs, i32p+1);
#else
        rv = XDR_PUTINT32(xdrs, i32p+1);
        if (!rv)
            return (rv);
        rv = XDR_PUTINT32(xdrs, i32p);
#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 = (int32_t *)&id;
        return (XDR_PUTINT32(xdrs, lp++) && XDR_PUTINT32(xdrs, lp));
#endif
 
    case XDR_DECODE:
#ifdef IEEEFP
        i32p = (int32_t *)(void *)dp;
#if BYTE_ORDER == BIG_ENDIAN
        rv = XDR_GETINT32(xdrs, i32p);
        if (!rv)
            return (rv);
        rv = XDR_GETINT32(xdrs, i32p+1);
#else
        rv = XDR_GETINT32(xdrs, i32p+1);
        if (!rv)
            return (rv);
        rv = XDR_GETINT32(xdrs, i32p);
#endif
        return (rv);
#else
        lp = (int32_t *)&id;
        if (!XDR_GETINT32(xdrs, lp++) || !XDR_GETINT32(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);
    }
    /* NOTREACHED */
    return (FALSE);
}

xdr_float()

bool_t xdr_float	(	XDR *	xdrs,
		float *	fp
	)

Definition at line 95 of file xdr_float.c.

{
#ifndef IEEEFP
    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
        return (XDR_PUTINT32(xdrs, (int32_t *)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_PUTINT32(xdrs, (int32_t *)&is));
#endif
 
    case XDR_DECODE:
#ifdef IEEEFP
        return (XDR_GETINT32(xdrs, (int32_t *)fp));
#else
        vsp = (struct vax_single *)fp;
        if (!XDR_GETINT32(xdrs, (int32_t *)&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);
    }
    /* NOTREACHED */
    return (FALSE);
}