Function

GLibascii_xdigit_value

Declaration

gint
g_ascii_xdigit_value (
  gchar c
)

Description

Determines the numeric value of a character as a hexadecimal digit. If the character is not a hex digit according to g_ascii_isxdigit(), -1 is returned.

Differs from g_unichar_xdigit_value() because it takes a char, so there’s no worry about sign extension if characters are signed.

Differs from g_unichar_xdigit_value() because it takes a char, so there’s no worry about sign extension if characters are signed.

Parameters

c

Type: gchar

An ASCII character.

Return value

Type: gint

The numerical value of c if it is a hex digit, -1 otherwise.