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Libraries
asn1c
Commits
1aea6983
Commit
1aea6983
authored
Oct 26, 2004
by
Lev Walkin
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Plain Diff
fight with signalling NANs and floating point exceptions on alpha64
parent
33700165
Changes
2
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Showing
2 changed files
with
46 additions
and
18 deletions
+46
-18
skeletons/REAL.c
skeletons/REAL.c
+30
-11
skeletons/tests/check-REAL.c
skeletons/tests/check-REAL.c
+16
-7
No files found.
skeletons/REAL.c
View file @
1aea6983
...
...
@@ -3,8 +3,9 @@
* Redistribution and modifications are permitted subject to BSD license.
*/
#if defined(__alpha)
#define _ISOC99_SOURCE
/* For quiet NAN, indirectly
through bits/nan.h */
#define _ISOC99_SOURCE
/* For quiet NAN,
through bits/nan.h */
#define _BSD_SOURCE
/* To reintroduce finite(3) */
#include <sys/resource.h>
/* For INFINITY */
#endif
#include <asn_internal.h>
#include <stdlib.h>
/* for strtod(3) */
...
...
@@ -16,10 +17,15 @@
#undef INT_MAX
#define INT_MAX ((int)(((unsigned int)-1) >> 1))
static
volatile
double
real_zero
=
0
.
0
;
#if !(defined(NAN) || defined(INFINITY))
static
volatile
double
real_zero
__attribute__
((
unused
))
=
0
.
0
;
#endif
#ifndef NAN
#define NAN (real_zero/real_zero)
#endif
#ifndef INFINITY
#define INFINITY (1.0/real_zero)
#endif
/*
* REAL basic type description.
...
...
@@ -54,12 +60,12 @@ typedef enum specialRealValue {
static
struct
specialRealValue_s
{
char
*
string
;
size_t
length
;
double
dv
;
long
dv
;
}
specialRealValue
[]
=
{
#define SRV_SET(foo, val) { foo, sizeof(foo) - 1, val }
SRV_SET
(
"<NOT-A-NUMBER/>"
,
0
.
0
),
SRV_SET
(
"<MINUS-INFINITY/>"
,
-
1
.
0
),
SRV_SET
(
"<PLUS-INFINITY/>"
,
1
.
0
),
SRV_SET
(
"<NOT-A-NUMBER/>"
,
0
),
SRV_SET
(
"<MINUS-INFINITY/>"
,
-
1
),
SRV_SET
(
"<PLUS-INFINITY/>"
,
1
),
#undef SRV_SET
};
...
...
@@ -269,12 +275,25 @@ REAL__xer_body_decode(void *sptr, void *chunk_buf, size_t chunk_size) {
for
(
i
=
0
;
i
<
sizeof
(
specialRealValue
)
/
sizeof
(
specialRealValue
[
0
]);
i
++
)
{
struct
specialRealValue_s
*
srv
=
&
specialRealValue
[
i
];
double
dv
;
if
(
srv
->
length
!=
chunk_size
||
memcmp
(
srv
->
string
,
chunk_buf
,
chunk_size
))
continue
;
if
(
asn_double2REAL
(
st
,
srv
->
dv
/
real_zero
))
return
-
1
;
/*
* It could've been done using
* (double)srv->dv / real_zero,
* but it summons fp exception on some platforms.
*/
switch
(
srv
->
dv
)
{
case
-
1
:
dv
=
-
INFINITY
;
break
;
case
0
:
dv
=
NAN
;
break
;
case
1
:
dv
=
INFINITY
;
break
;
default:
return
-
1
;
}
if
(
asn_double2REAL
(
st
,
dv
))
return
-
1
;
return
chunk_size
;
}
...
...
@@ -337,10 +356,10 @@ asn_REAL2double(const REAL_t *st, double *dbl_value) {
switch
(
st
->
buf
[
0
])
{
case
0x40
:
/* 01000000: PLUS-INFINITY */
*
dbl_value
=
1
.
0
/
real_zero
;
*
dbl_value
=
INFINITY
;
return
0
;
case
0x41
:
/* 01000001: MINUS-INFINITY */
*
dbl_value
=
-
1
.
0
/
real_zero
;
*
dbl_value
=
-
INFINITY
;
return
0
;
/*
* The following cases are defined by
...
...
skeletons/tests/check-REAL.c
View file @
1aea6983
...
...
@@ -88,8 +88,8 @@ check(REAL_t *rn, double orig_dbl, const char *sample, const char *canonical_sam
printf
(
"%02x"
,
*
p
);
printf
(
"] (ilogb %d)
\n
"
,
ilogb
(
val
));
printf
(
"%.12f vs %.12f
\n
"
,
orig_dbl
,
va
l
);
assert
(
orig_dbl
==
val
||
(
isnan
(
orig_dbl
)
&&
isnan
(
val
))
);
printf
(
"%.12f vs %.12f
\n
"
,
val
,
orig_db
l
);
assert
(
(
isnan
(
orig_dbl
)
&&
isnan
(
val
))
||
val
==
orig_dbl
);
printf
(
"OK
\n
"
);
check_str_repr
(
val
,
sample
,
canonical_sample
);
...
...
@@ -98,7 +98,7 @@ check(REAL_t *rn, double orig_dbl, const char *sample, const char *canonical_sam
uint8_t
buf_1_0
[]
=
{
0x80
,
0xcc
,
0x10
,
0x00
,
0x00
,
0x00
,
0x00
,
0x00
,
0x00
};
uint8_t
buf_1_1
[]
=
{
0x80
,
0xcc
,
0x11
,
0x99
,
0x99
,
0x99
,
0x99
,
0x99
,
0x9a
};
uint8_t
buf_3_14
[]
=
{
0x80
,
0xcd
,
0x19
,
0x1e
,
0xb8
,
0x51
,
0xeb
,
0x85
,
0x1f
};
/* These ones are very interesting!
It checks
mantissa overflow! */
/* These ones are very interesting!
They check
mantissa overflow! */
uint8_t
buf_mo1
[]
=
{
0xC0
,
0xc5
,
0x19
,
0x1e
,
0xb8
,
0x51
,
0xeb
,
0x85
,
0x1f
,
3
};
uint8_t
buf_mo2
[]
=
{
0x80
,
0xbd
,
0x19
,
0x1e
,
0xb8
,
0x51
,
0xeb
,
0x85
,
0x1f
,
3
,
2
};
...
...
@@ -189,11 +189,11 @@ check_xer(int fuzzy, double orig_value) {
ret
=
asn_REAL2double
(
newst1
,
&
value1
);
assert
(
ret
==
0
);
assert
(
value0
==
orig_value
||
(
isnan
(
value0
)
&&
isnan
(
orig_value
))
assert
(
(
isnan
(
value0
)
&&
isnan
(
orig_value
))
||
value0
==
orig_value
||
fuzzy
);
assert
(
value1
==
orig_value
||
(
isnan
(
value1
)
&&
isnan
(
orig_value
))
);
assert
(
(
isnan
(
value1
)
&&
isnan
(
orig_value
))
||
value1
==
orig_value
);
assert
(
newst0
->
size
==
st
.
size
||
fuzzy
);
assert
(
newst1
->
size
==
st
.
size
);
...
...
@@ -250,9 +250,18 @@ main() {
check_buf
(
buf_mo2
,
sizeof
(
buf_mo2
),
3
.
14
,
"3.14"
,
"3.14E0"
);
#ifdef NAN
check_xer
(
0
,
NAN
);
/* "<NOT-A-NUMBER/>" */
#else
check_xer
(
0
,
zero
/
zero
);
/* "<NOT-A-NUMBER/>" */
#endif
#ifdef INFINITY
check_xer
(
0
,
INFINITY
);
/* "<PLUS-INFINITY/>" */
check_xer
(
0
,
-
INFINITY
);
/* "<MINUS-INFINITY/>" */
#else
check_xer
(
0
,
1
.
0
/
zero
);
/* "<PLUS-INFINITY/>" */
check_xer
(
0
,
-
1
.
0
/
zero
);
/* "<MINUS-INFINITY/>" */
#endif
check_xer
(
0
,
1
.
0
);
check_xer
(
0
,
-
1
.
0
);
check_xer
(
0
,
1
.
5
);
...
...
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