newlib-cygwin/newlib/libc/xdr/xdr_float.c

132 lines
3.6 KiB
C

/*
* Copyright (c) 2009, Sun Microsystems, Inc.
* All rights reserved.
*
* 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 Sun Microsystems, 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.
*/
/*
* xdr_float.c, Generic XDR routines implementation.
*
* 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 <sys/types.h>
#include <rpc/types.h>
#include <rpc/xdr.h>
#include "xdr_private.h"
/*
* NB: Not portable.
* This routine works on machines with IEEE754 FP and Vaxen.
* Assume that xdr_private.h arranges things so that one of
* 1) __IEEE_LITTLE_ENDIAN
* 2) __IEEE_BIG_ENDIAN
* 3) __vax__
* is #defined. Otherwise, expect errors.
*/
#ifndef XDR_FLOAT_C
#define XDR_FLOAT_C
#endif
#if defined(__IEEE_LITTLE_ENDIAN) || defined(__IEEE_BIG_ENDIAN)
bool_t
xdr_float (XDR * xdrs,
float *fp)
{
switch (xdrs->x_op)
{
case XDR_ENCODE:
return (XDR_PUTINT32 (xdrs, (int32_t *) fp));
case XDR_DECODE:
return (XDR_GETINT32 (xdrs, (int32_t *) fp));
case XDR_FREE:
return TRUE;
}
return FALSE;
}
#if !defined(_DOUBLE_IS_32BITS)
bool_t
xdr_double (XDR * xdrs,
double *dp)
{
int32_t *i32p;
bool_t rv;
switch (xdrs->x_op)
{
case XDR_ENCODE:
i32p = (int32_t *) (void *) dp;
#if defined(__IEEE_BIG_ENDIAN)
rv = XDR_PUTINT32 (xdrs, i32p);
if (!rv)
return (rv);
rv = XDR_PUTINT32 (xdrs, i32p + 1);
#else /* must be __IEEE_LITTLE_ENDIAN */
rv = XDR_PUTINT32 (xdrs, i32p + 1);
if (!rv)
return (rv);
rv = XDR_PUTINT32 (xdrs, i32p);
#endif /* __IEEE_LITTLE_ENDIAN */
return (rv);
case XDR_DECODE:
i32p = (int32_t *) (void *) dp;
#if defined(__IEEE_BIG_ENDIAN)
rv = XDR_GETINT32 (xdrs, i32p);
if (!rv)
return (rv);
rv = XDR_GETINT32 (xdrs, i32p + 1);
#else /* must be __IEEE_LITTLE_ENDIAN */
rv = XDR_GETINT32 (xdrs, i32p + 1);
if (!rv)
return (rv);
rv = XDR_GETINT32 (xdrs, i32p);
#endif /* __IEEE_LITTLE_ENDIAN */
return (rv);
case XDR_FREE:
return TRUE;
}
return FALSE;
}
#endif /* !_DOUBLE_IS_32BITS */
#elif defined(__vax__)
#include "xdr_float_vax.c"
#endif