char_isalnum() checks for an alphanumeric character; it is equivalent to (char_isalpha(ch) || char_isdigit(ch)).
char_isalpha() checks for an alphabetic character; it is equivalent to (char_isupper(c) || char_islower(c)).
char_isascii() checks whether ch is a 7-bit unsigned char value that fits into the ASCII character set.
char_isblank() checks for a blank character; that is, a space or a tab.
char_iscntrl() checks for a control character.
char_isdigit() checks for a digit (0 through 9).
char_isgraph() checks for any printable character except space.
char_islower() checks for a lower-case character.
char_isprint() checks for any printable character including space.
char_ispunct() checks for any printable character which is not a space or an alphanumeric character.
char_isspace() checks for white-space characters. These are: space, form-feed (''), newline ('
'), carriage return (''), horizontal tab (''), and vertical tab ('').
char_isupper() checks for an uppercase letter.
char_isxdigit() checks for a hexadecimal digits, i.e. one of 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F.
char_tolower() converts a character to lowercase if applicable.
char_toupper() converts a character to uppercase if applicable.
Defines | |
#define | char_isascii(ch) ((unsigned int)(ch) < 128u) |
check for an ASCII character | |
#define | char_isblank(ch) (ch == ' ' || ch == '\t') |
check for a blank character (space, horizontal tab) | |
#define | char_iscntrl(ch) ((unsigned int)(ch) < 32u || ch == 127) |
check for an ASCII control character | |
#define | char_isdigit(ch) ((unsigned int)(ch - '0') < 10u) |
check for a digit character (0-9) | |
#define | char_isgraph(ch) ((unsigned int)(ch - '!') < 94u) |
check for graphable characters (excluding space) | |
#define | char_islower(ch) ((unsigned int)(ch - 'a') < 26u) |
check for a lower-case character | |
#define | char_isprint(ch) ((unsigned int)(ch - ' ') < 95u) |
check for a printable character (including space) | |
#define | char_isspace(ch) ((unsigned int)(ch - '\t') < 5u || ch == ' ') |
check for a whitespace character (\t, \n, \v, \f, \r) | |
#define | char_isupper(ch) ((unsigned int)(ch - 'A') < 26u) |
check for an upper-case character | |
#define | char_isxdigit(ch) |
check for a hexadecimal character | |
#define | char_isalpha(ch) (char_islower(ch) || char_isupper(ch)) |
check for an upper- or lower-case character | |
#define | char_isalnum(ch) (char_isalpha(ch) || char_isdigit(ch)) |
check for an upper-, lower-case or digit character | |
#define | char_ispunct(ch) |
check for a punctuation character | |
#define | char_tolower(ch) do { if (char_isupper(ch)) ch += 32; } while(0) |
convert character to lower-case | |
#define | char_toupper(ch) do { if (char_islower(ch)) ch -= 32; } while(0) |
convert character to upper-case |
#define char_isascii | ( | ch | ) | ((unsigned int)(ch) < 128u) |
#define char_isblank | ( | ch | ) | (ch == ' ' || ch == '\t') |
check for a blank character (space, horizontal tab)
Definition at line 70 of file char.h.
Referenced by str_check().
#define char_iscntrl | ( | ch | ) | ((unsigned int)(ch) < 32u || ch == 127) |
check for an ASCII control character
Definition at line 73 of file char.h.
Referenced by str_check().
#define char_isdigit | ( | ch | ) | ((unsigned int)(ch - '0') < 10u) |
#define char_isgraph | ( | ch | ) | ((unsigned int)(ch - '!') < 94u) |
check for graphable characters (excluding space)
Definition at line 79 of file char.h.
Referenced by str_check().
#define char_islower | ( | ch | ) | ((unsigned int)(ch - 'a') < 26u) |
#define char_isprint | ( | ch | ) | ((unsigned int)(ch - ' ') < 95u) |
check for a printable character (including space)
Definition at line 85 of file char.h.
Referenced by str_check().
#define char_isspace | ( | ch | ) | ((unsigned int)(ch - '\t') < 5u || ch == ' ') |
check for a whitespace character (\t, \n, \v, \f, \r)
Definition at line 88 of file char.h.
Referenced by _lucid_vsscanf(), str_check(), and str_toumax().
#define char_isupper | ( | ch | ) | ((unsigned int)(ch - 'A') < 26u) |
#define char_isxdigit | ( | ch | ) |
Value:
(char_isdigit(ch) || \ (unsigned int)(ch - 'a') < 6u || \ (unsigned int)(ch - 'A') < 6u)
Definition at line 94 of file char.h.
Referenced by str_check().
#define char_isalpha | ( | ch | ) | (char_islower(ch) || char_isupper(ch)) |
check for an upper- or lower-case character
Definition at line 100 of file char.h.
Referenced by str_check().
#define char_isalnum | ( | ch | ) | (char_isalpha(ch) || char_isdigit(ch)) |
check for an upper-, lower-case or digit character
Definition at line 103 of file char.h.
Referenced by str_check().
#define char_ispunct | ( | ch | ) |
Value:
(char_isprint(ch) && \ !char_isalnum(ch) && \ !char_isspace(ch))
Definition at line 106 of file char.h.
Referenced by str_check().
#define char_tolower | ( | ch | ) | do { if (char_isupper(ch)) ch += 32; } while(0) |
#define char_toupper | ( | ch | ) | do { if (char_islower(ch)) ch -= 32; } while(0) |