@@ -737,16 +737,18 @@
 	return (x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).edx & (1u << 23));
 }
 
 + (bool)supports3DNow
 {
-	return (x86CPUID(0x80000001, 0).edx & (1u << 31));
+	return (x86CPUID(0x80000000, 0).eax >= 0x80000001 &&
+	    x86CPUID(0x80000001, 0).edx & (1u << 31));
 }
 
 + (bool)supportsEnhanced3DNow
 {
-	return (x86CPUID(0x80000001, 0).edx & (1u << 30));
+	return (x86CPUID(0x80000000, 0).eax >= 0x80000001 &&
+	    x86CPUID(0x80000001, 0).edx & (1u << 30));
 }
 
 + (bool)supportsSSE
 {
 	return (x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).edx & (1u << 25));
@@ -794,10 +796,15 @@
 
 + (bool)supportsSHAExtensions
 {
 	return (x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ebx & (1u << 29));
 }
+
++ (bool)supportsF16C
+{
+	return (x86CPUID(0, 0).eax >= 1 && x86CPUID(1, 0).ecx & (1u << 29));
+}
 
 + (bool)supportsAVX512Foundation
 {
 	return (x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ebx & (1u << 16));
 }
@@ -859,10 +866,20 @@
 
 + (bool)supportsAVX512BitAlgorithms
 {
 	return (x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).ecx & (1u << 12));
 }
+
++ (bool)supportsAVX512Float16Instructions
+{
+	return (x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 0).edx & (1u << 23));
+}
+
++ (bool)supportsAVX512BFloat16Instructions
+{
+	return (x86CPUID(0, 0).eax >= 7 && x86CPUID(7, 1).eax & (1u << 5));
+}
 #endif
 
 #if defined(OF_POWERPC) || defined(OF_POWERPC64)
 + (bool)supportsAltiVec
 {