GEOS SDK TechDocs
|
| 
5.2 String Length and Size
| 
5.4 Character Categories
LocalUpcaseChar(), LocalDowncaseChar(), LocalUpcaseString(), LocalDowncaseString()
These functions take a character or string and, if possible, transform it to upper or lower case. They work only on alphabetic characters; other characters will be returned unchanged. These functions can deal with all languages, understanding "È" is the upper case for "è". If you're used to using ASCII, you might be tempted to write your own version of these casing functions by doing arithmetic operations with the lexical or ASCII values of characters, but chances are these will not work with other character sets and should be avoided.
GEOS SDK TechDocs
|
| 5.2 String Length and Size
| 5.4 Character Categories