+
+ /// getFPMantissaWidth - Return the width of the mantissa of this type. This
+ /// is only valid on scalar floating point types. If the FP type does not
+ /// have a stable mantissa (e.g. ppc long double), this method returns -1.
+ int getFPMantissaWidth() const {
+ assert(isFloatingPoint() && "Not a floating point type!");
+ if (ID == FloatTyID) return 24;
+ if (ID == DoubleTyID) return 53;
+ if (ID == X86_FP80TyID) return 64;
+ if (ID == FP128TyID) return 113;
+ assert(ID == PPC_FP128TyID && "unknown fp type");
+ return -1;
+ }