vcpkg/ports/ncnn/fix_uwp.patch

diff --git a/src/cpu.cpp b/src/cpu.cpp
index e56cd67..3ca1189 100644
--- a/src/cpu.cpp
+++ b/src/cpu.cpp
@@ -184,6 +184,13 @@ static int g_cpu_is_arm_a53_a55;
 #endif // defined __ANDROID__ || defined __linux__
 
 #if defined _WIN32
+#if WINAPI_FAMILY == WINAPI_FAMILY_APP
+static int detectisa(const void* /*some_inst*/)
+{
+    // uwp does not support seh  :(
+    return 0;
+}
+#else  // WINAPI_FAMILY == WINAPI_FAMILY_APP
 static int g_sigill_caught = 0;
 static jmp_buf g_jmpbuf;
 
@@ -213,6 +220,7 @@ static int detectisa(const void* some_inst)
 
     return g_sigill_caught ? 0 : 1;
 }
+#endif // WINAPI_FAMILY == WINAPI_FAMILY_APP
 
 #if defined(__i386__) || defined(__x86_64__) || defined(_M_IX86) || defined(_M_X64)
 #ifdef _MSC_VER
@@ -1966,12 +1974,12 @@ static void initialize_global_cpu_info()
 
 #if defined _WIN32
 #if __arm__
-    g_cpu_support_arm_neon = detectisa(some_neon);
+    g_cpu_support_arm_neon = 1; // all modern windows arm devices have neon
     g_cpu_support_arm_vfpv4 = detectisa(some_vfpv4);
 #if __aarch64__
     g_cpu_support_arm_cpuid = detectisa(some_cpuid);
-    g_cpu_support_arm_asimdhp = detectisa(some_asimdhp);
-    g_cpu_support_arm_asimddp = detectisa(some_asimddp);
+    g_cpu_support_arm_asimdhp = detectisa(some_asimdhp) || IsProcessorFeaturePresent(43); // dp implies hp
+    g_cpu_support_arm_asimddp = detectisa(some_asimddp) || IsProcessorFeaturePresent(43); // 43 is PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE
     g_cpu_support_arm_asimdfhm = detectisa(some_asimdfhm);
     g_cpu_support_arm_bf16 = detectisa(some_bf16);
     g_cpu_support_arm_i8mm = detectisa(some_i8mm);