c if it is a hex digit, -1 otherwiseasciiXdigitValue
fn
int asciiXdigitValue(char c)Determines the numeric value of a character as a hexadecimal digit. If the character is not a hex digit according to funcGLib.ascii_isxdigit, -1 is returned.
Differs from funcGLib.unichar_xdigit_value because it takes a char, so there's no worry about sign extension if characters are signed.
Differs from funcGLib.unichar_xdigit_value because it takes a char, so there's no worry about sign extension if characters are signed.
Parameters
c | an ASCII character |
Returns
the numerical value of