long type | Long type specifier |
simple-type-specifier := long |
When used alone or with int , the long type specifier represents a long integer whose range is at least as large as a plain int . It can be combined with unsigned to denote an unsigned integer whose range is at least as large as a plain unsigned . A plain long is signed by default, but you can use the signed specifier to be explicit.
When combined with double , long represents an extended-precision, floating-point number, whose range and precision are at least as great as those of a plain double .
declaration , declarator , double , float , int , short , signed , type , unsigned , Chapter 2