isU12            1814 nanojit/NativeARM.cpp     if (isU12(off)) {
isU12            1818 nanojit/NativeARM.cpp     } else if (isU12(-off)) {
isU12             638 nanojit/NativeARM.h             NanoAssert(isU12(-_off));                                   \
isU12             641 nanojit/NativeARM.h             NanoAssert(isU12(_off));                                    \