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It's lowlevel, that's why there's so much spec. And much of it is just defining that behaviour is implementation defined. And as I said, it's as lowlevel as an
by qwertyuiop924 10y ago
It's lowlevel, that's why there's so much spec. And much of it is just defining that behaviour is implementation defined.
And as I said, it's as lowlevel as an HLL can be.
I wish we could check the carry flag. You could totally write a C library for that, I bet, by mixing in some asm, and using conditional compilation. Language extension!
- versteegen 10y agoGCC since 5.0 and Clang since longer ago than that support (the same) set of builtin functions to check carry and overflow bits: https://gcc.gnu.org/onlinedocs/gcc/Integer-Overflow-Builtins.html https://gcc.gnu.org/onlinedocs/gcc/Integer-Overflow-Builtins... http://clang.llvm.org/docs/LanguageExtensions.html#checked-arithmetic-builtins http://clang.llvm.org/docs/LanguageExtensions.html#checked-a...