Modify code to support the use of integer-constant-type suffixes on 64-bit Intel® architecture. If a piece of code uses hex constants to generate a particular value, you might need to modify your code for use on 64-bit Intel architecture, because the value might change.
For example, the value of 0xFFFFFFFF on 32-bit Intel architecture is -1, but the value on 64-bit Intel architecture is 4,294,967,295. The value of 0x100000000 on 32-bit Intel architecture is 0, but the value on 64-bit Intel architecture is 4,294,967,296.
Evaluate your code for hex constants and replace them with a C const declaration, such as the following:
const int all1s= 0xFFFFFFFF;
In addition, be sure to specify a particular data type, including whether it is signed or unsigned, and use type suffixes as appropriate, such as L or UL.
Related information about migrating other types of constants from 32-bit Intel architecture to 64-bit Intel architecture is covered in the following separate items: