Kernel/userspace: rework floating point math

SSE is now unconditionally enabled any where and most of math.h is now
actually implemented. using __builtin_<func> lead to many hangs where
the builtin function would just call itself.

userspace/libraries/LibC/printf_impl.cpp

@@ -129,7 +129,6 @@ static void integer_to_string(char* buffer, T value, int base, bool upper, forma
 	buffer[offset++] = '\0';
 }
 
-#if __enable_sse
 template<BAN::floating_point T>
 static void floating_point_to_string(char* buffer, T value, bool upper, const format_options_t options)
 {
@@ -259,7 +258,6 @@ static void floating_point_to_exponent_string(char* buffer, T value, bool upper,
 	exponent_options.width = 3;
 	integer_to_string<int>(buffer + offset, exponent, 10, upper, exponent_options);
 }
-#endif
 
 extern "C" int printf_impl(const char* format, va_list arguments, int (*putc_fun)(int, void*), void* data)
 {
@@ -496,7 +494,6 @@ extern "C" int printf_impl(const char* format, va_list arguments, int (*putc_fun
 				format++;
 				break;
 			}
-#if __enable_sse
 			case 'e':
 			case 'E':
 			{
@@ -529,7 +526,6 @@ extern "C" int printf_impl(const char* format, va_list arguments, int (*putc_fun
 			case 'A':
 				// TODO
 				break;
-#endif
 			case 'c':
 			{
 				conversion[0] = va_arg(arguments, int);