Function LLVMGetFCmpPredicate 

pub unsafe extern "C" fn LLVMGetFCmpPredicate(
    Inst: LLVMValueRef,
) -> LLVMRealPredicate

Obtain the float predicate of an instruction.

This is only valid for instructions that correspond to llvm::FCmpInst.

@see llvm::FCmpInst::getPredicate()