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webservices: Use a long double variable in format_double.

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Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Sebastian Lackner <sebastian@fds-team.de>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Hans Leidekker 2016-07-11 09:46:16 +02:00 committed by Alexandre Julliard
parent 0e5fdf0e00
commit d3cc9d1ca6
4 changed files with 19 additions and 7 deletions
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1
configure vendored
View File

@ -16939,6 +16939,7 @@ for ac_func in \
lrintf \
lround \
lroundf \
powl \
remainder \
remainderf \
rint \

1
configure.ac
View File

@ -2535,6 +2535,7 @@ AC_CHECK_FUNCS(\
lrintf \
lround \
lroundf \
powl \
remainder \
remainderf \
rint \

21
dlls/webservices/writer.c
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@ -16,6 +16,7 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <stdarg.h>
#include <stdio.h>
#include <math.h>
@ -1049,9 +1050,10 @@ static ULONG format_uint64( const UINT64 *ptr, unsigned char *buf )
static ULONG format_double( const double *ptr, unsigned char *buf )
{
static const double precision = 0.0000000000000001;
#ifdef HAVE_POWL
static const long double precision = 0.0000000000000001;
unsigned char *p = buf;
double val = *ptr; /* FIXME: use long double */
long double val = *ptr;
int neg, mag, mag2, use_exp;
if (isnan( val ))
@ -1081,12 +1083,12 @@ static ULONG format_double( const double *ptr, unsigned char *buf )
val = -val;
}
mag = log10( val );
mag = log10l( val );
use_exp = (mag >= 15 || (neg && mag >= 1) || mag <= -1);
if (use_exp)
{
if (mag < 0) mag -= 1;
val = val / pow( 10.0, mag );
val = val / powl( 10.0, mag );
mag2 = mag;
mag = 0;
}
@ -1094,14 +1096,14 @@ static ULONG format_double( const double *ptr, unsigned char *buf )
while (val > precision || mag >= 0)
{
double weight = pow( 10.0, mag );
long double weight = powl( 10.0, mag );
if (weight > 0 && !isinf( weight ))
{
int digit = floor( val / weight );
int digit = floorl( val / weight );
val -= digit * weight;
*(p++) = '0' + digit;
}
if (!mag && val > 0) *(p++) = '.';
if (!mag && val > precision) *(p++) = '.';
mag--;
}
@ -1131,6 +1133,10 @@ static ULONG format_double( const double *ptr, unsigned char *buf )
}
return p - buf;
#else
FIXME( "powl not found at build time\n" );
return 0;
#endif
}
static ULONG format_guid( const GUID *ptr, unsigned char *buf )
@ -1212,6 +1218,7 @@ static HRESULT text_to_utf8text( const WS_XML_TEXT *text, WS_XML_UTF8_TEXT **ret
if (!set_fp_rounding( &fpword )) return E_NOTIMPL;
len = format_double( &double_text->value, buf );
restore_fp_rounding( fpword );
if (!len) return E_NOTIMPL;
if (!(*ret = alloc_utf8_text( buf, len ))) return E_OUTOFMEMORY;
return S_OK;
}

3
include/config.h.in
View File

@ -672,6 +672,9 @@
/* Define to 1 if you have the <port.h> header file. */
#undef HAVE_PORT_H
/* Define to 1 if you have the `powl' function. */
#undef HAVE_POWL
/* Define if we can use ppdev.h for parallel port access */
#undef HAVE_PPDEV