================
@@ -201,6 +201,30 @@ bitsfx(T f) {
return cpp::bit_cast<XType, T>(f);
}
+// divide the two fixed-point types and return an integer result
+template <typename T, typename XType>
+LIBC_INLINE constexpr cpp::enable_if_t<cpp::is_fixed_point_v<T>, XType>
+idiv(T x, T y) {
+ using FXBits = FXBits<T>;
+ using FXRep = FXRep<T>;
+ using CompType = typename FXRep::CompType;
+
+ if (y == FXRep::ZERO()) {
+ // If the value of the second operand of the / operator is zero, the
+ // behavior is undefined. Ref: ISO/IEC TR 18037:2008(E) p.g. 16
+ return static_cast<XType>(0);
+ }
----------------
krishna2803 wrote:
can we do something like:
```c++
#if defined(LIBC_ADD_FIXED_POINT_CHECKS)
#define LIBC_CRASH_ON_ZERO_DENOM(den, zero) \
do { \
if (LIBC_UNLIKELY((den) == (zero))) \
__builtin_trap(); \
} while (0)
#endif
```
https://github.com/llvm/llvm-project/pull/133005