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scrrun: Implement HashVal for floating point keys.

This commit is contained in:
Nikolay Sivov 2015-02-25 08:11:15 +03:00 committed by Alexandre Julliard
parent 2fc2a7ae02
commit 08900265a0
2 changed files with 123 additions and 0 deletions
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19
dlls/scrrun/dictionary.c
View File

@ -18,6 +18,8 @@
#define COBJMACROS
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include "windef.h"
@ -336,6 +338,23 @@ static HRESULT WINAPI dictionary_get_HashVal(IDictionary *iface, VARIANT *key, V
case VT_I4:
V_I4(hash) = get_num_hash(V_I4(key));
break;
case VT_R4:
case VT_R8:
{
FLOAT flt = V_VT(key) == VT_R4 ? V_R4(key) : V_R8(key);
if (isinf(flt))
{
V_I4(hash) = 0;
break;
}
else if (!isnan(flt))
{
V_I4(hash) = get_num_hash(flt);
break;
}
/* fallthrough on NAN */
}
case VT_INT:
case VT_UINT:
case VT_I1:

104
dlls/scrrun/tests/dictionary.c
View File

@ -149,6 +149,29 @@ static DWORD get_num_hash(FLOAT num)
return (*((DWORD*)&num)) % 1201;
}
typedef union
{
struct
{
unsigned int m : 23;
unsigned int exp_bias : 8;
unsigned int sign : 1;
} i;
float f;
} R4_FIELDS;
typedef union
{
struct
{
unsigned int m_lo : 32; /* 52 bits of precision */
unsigned int m_hi : 20;
unsigned int exp_bias : 11; /* bias == 1023 */
unsigned int sign : 1;
} i;
double d;
} R8_FIELDS;
static void test_hash_value(void)
{
/* string test data */
@ -165,8 +188,14 @@ static void test_hash_value(void)
0, -1, 100, 1, 255
};
static const FLOAT float_hash_tests[] = {
0.0, -1.0, 100.0, 1.0, 255.0, 1.234
};
IDictionary *dict;
VARIANT key, hash;
R8_FIELDS fx8;
R4_FIELDS fx4;
HRESULT hr;
unsigned i;
@ -307,6 +336,81 @@ static void test_hash_value(void)
expected);
}
/* nan */
fx4.f = 10.0;
fx4.i.exp_bias = 0xff;
V_VT(&key) = VT_R4;
V_R4(&key) = fx4.f;
VariantInit(&hash);
hr = IDictionary_get_HashVal(dict, &key, &hash);
ok(hr == CTL_E_ILLEGALFUNCTIONCALL || broken(hr == S_OK) /* win2k, win2k3 */, "got 0x%08x\n", hr);
ok(V_VT(&hash) == VT_I4, "got %d\n", V_VT(&hash));
ok(V_I4(&hash) == ~0u || broken(V_I4(&hash) == 0 /* win2k */ ||
V_I4(&hash) == 0x1f4 /* vista, win2k8 */), "got hash 0x%08x\n", V_I4(&hash));
/* inf */
fx4.f = 10.0;
fx4.i.m = 0;
fx4.i.exp_bias = 0xff;
V_VT(&key) = VT_R4;
V_R4(&key) = fx4.f;
V_I4(&hash) = 10;
hr = IDictionary_get_HashVal(dict, &key, &hash);
ok(hr == S_OK, "got 0x%08x\n", hr);
ok(V_VT(&hash) == VT_I4, "got %d\n", V_VT(&hash));
ok(V_I4(&hash) == 0, "got hash 0x%08x\n", V_I4(&hash));
/* nan */
fx8.d = 10.0;
fx8.i.exp_bias = 0x7ff;
V_VT(&key) = VT_R8;
V_R8(&key) = fx8.d;
VariantInit(&hash);
hr = IDictionary_get_HashVal(dict, &key, &hash);
ok(hr == CTL_E_ILLEGALFUNCTIONCALL || broken(hr == S_OK) /* win2k, win2k3 */, "got 0x%08x\n", hr);
ok(V_VT(&hash) == VT_I4, "got %d\n", V_VT(&hash));
ok(V_I4(&hash) == ~0u || broken(V_I4(&hash) == 0 /* win2k */ ||
V_I4(&hash) == 0x1f4 /* vista, win2k8 */), "got hash 0x%08x\n", V_I4(&hash));
/* inf */
fx8.d = 10.0;
fx8.i.m_lo = 0;
fx8.i.m_hi = 0;
fx8.i.exp_bias = 0x7ff;
V_VT(&key) = VT_R8;
V_R8(&key) = fx8.d;
V_I4(&hash) = 10;
hr = IDictionary_get_HashVal(dict, &key, &hash);
ok(hr == S_OK, "got 0x%08x\n", hr);
ok(V_VT(&hash) == VT_I4, "got %d\n", V_VT(&hash));
ok(V_I4(&hash) == 0, "got hash 0x%08x\n", V_I4(&hash));
for (i = 0; i < sizeof(float_hash_tests)/sizeof(float_hash_tests[0]); i++) {
DWORD expected = get_num_hash(float_hash_tests[i]);
V_VT(&key) = VT_R4;
V_R4(&key) = float_hash_tests[i];
VariantInit(&hash);
hr = IDictionary_get_HashVal(dict, &key, &hash);
ok(hr == S_OK, "got 0x%08x\n", hr);
ok(V_VT(&hash) == VT_I4, "got %d\n", V_VT(&hash));
ok(V_I4(&hash) == expected, "%d: got hash 0x%08x, expected 0x%08x\n", i, V_I4(&hash),
expected);
V_VT(&key) = VT_R8;
V_R8(&key) = float_hash_tests[i];
VariantInit(&hash);
hr = IDictionary_get_HashVal(dict, &key, &hash);
ok(hr == S_OK, "got 0x%08x\n", hr);
ok(V_VT(&hash) == VT_I4, "got %d\n", V_VT(&hash));
ok(V_I4(&hash) == expected, "%d: got hash 0x%08x, expected 0x%08x\n", i, V_I4(&hash),
expected);
}
IDictionary_Release(dict);
}