Unsigned(category25-plesk.html) - phpMan
strtoul (3) - convert a string to an unsigned long integer strtoul (3p) - convert a string to an unsigned long strtoull (3) - convert a string to an unsigned long integer strtoull (3p) - convert a string to an unsigned long strtouq (3) - convert a string to an unsigned long integer wcstoul (3p) - convert a wide-character string to an unsigned long wcstoull (3p) - convert a wide-character string to an unsigned long