Jeff Smith : d3d11/tests: Use compare_uint() in compare_float() instead of abs().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c29459c9019f113b3f9bf256f8f8b7862c89aa69
URL:    https://gitlab.winehq.org/wine/wine/-/commit/c29459c9019f113b3f9bf256f8f8b78...

Author: Jeff Smith 
Date:   Wed Aug  2 22:47:54 2023 -0500

d3d11/tests: Use compare_uint() in compare_float() instead of abs().

The result of abs(INT_MIN) is INT_MIN, which breaks the ulps comparison.

---

dlls/d3d11/tests/d3d11.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/dlls/d3d11/tests/d3d11.c b/dlls/d3d11/tests/d3d11.c
index 9a907d907bb..2307c0b13c5 100644
--- a/dlls/d3d11/tests/d3d11.c
+++ b/dlls/d3d11/tests/d3d11.c
@@ -261,6 +261,13 @@ static HRESULT check_interface_(unsigned int line, void *iface, REFIID riid, BOO
     return hr;
 }

+static BOOL compare_uint(unsigned int x, unsigned int y, unsigned int max_diff)
+{
+    unsigned int diff = x > y ? x - y : y - x;
+
+    return diff <= max_diff;
+}
+
 static BOOL compare_float(float f, float g, unsigned int ulps)
 {
     int x = *(int *)&f;
@@ -271,10 +278,7 @@ static BOOL compare_float(float f, float g, unsigned int ulps)
     if (y < 0)
         y = INT_MIN - y;

-    if (abs(x - y) > ulps)
-        return FALSE;
-
-    return TRUE;
+    return compare_uint(x, y, ulps);
 }

static BOOL compare_vec4(const struct vec4 *v1, const struct vec4 *v2, unsigned int ulps)
@@ -285,13 +289,6 @@ static BOOL compare_vec4(const struct vec4 *v1, const struct vec4 *v2, unsigned
             && compare_float(v1->w, v2->w, ulps);
 }

-static BOOL compare_uint(unsigned int x, unsigned int y, unsigned int max_diff)
-{
-    unsigned int diff = x > y ? x - y : y - x;
-
-    return diff <= max_diff;
-}
-
 static BOOL compare_uvec4(const struct uvec4* v1, const struct uvec4 *v2)
 {
     return v1->x == v2->x && v1->y == v2->y && v1->z == v2->z && v1->w == v2->w;