sk_ctype.c File Reference

#include "sk_ctype.h"

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Functions
int	isalnum (int c)
int	isalpha (int c)
int	isblank (int c)
int	iscntrl (int c)
int	isdigit (int c)
int	isgraph (int c)
int	islower (int c)
int	isprint (int c)
int	ispunct (int c)
int	isspace (int c)
int	isupper (int c)
int	isxdigit (int c)
int	tolower (int c)
int	toupper (int c)

Function Documentation

isalnum()

int isalnum

(

int

c

)

Copyright

Copyright The SimpleKernel Contributors

Definition at line 11 of file sk_ctype.c.

{ return (isalpha(c) || isdigit(c)); }

isalpha()

int isalpha

(

int

c

)

Definition at line 13 of file sk_ctype.c.

{ return (islower(c) || isupper(c)); }

isblank()

int isblank

(

int

c

)

Definition at line 15 of file sk_ctype.c.

{ return (c == ' ' || c == '\t'); }

iscntrl()

int iscntrl

(

int

c

)

Definition at line 17 of file sk_ctype.c.

{ return ((c >= 0 && c <= 31) || c == 127); }

isdigit()

int isdigit

(

int

c

)

Definition at line 19 of file sk_ctype.c.

{ return (c >= '0' && c <= '9'); }

isgraph()

int isgraph

(

int

c

)

Definition at line 21 of file sk_ctype.c.

{ return (c >= 33 && c <= 126); }

islower()

int islower

(

int

c

)

Definition at line 23 of file sk_ctype.c.

{ return (c >= 'a' && c <= 'z'); }

isprint()

int isprint

(

int

c

)

Definition at line 25 of file sk_ctype.c.

{ return (c >= 32 && c <= 126); }

ispunct()

int ispunct

(

int

c

)

Definition at line 27 of file sk_ctype.c.

{ return (isgraph(c) && !isalnum(c)); }

isspace()

int isspace

(

int

c

)

Definition at line 29 of file sk_ctype.c.

                   {
  return (c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' ||
          c == '\v');
}

isupper()

int isupper

(

int

c

)

Definition at line 34 of file sk_ctype.c.

{ return (c >= 'A' && c <= 'Z'); }

isxdigit()

int isxdigit

(

int

c

)

Definition at line 36 of file sk_ctype.c.

                    {
  return (isdigit(c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'));
}

tolower()

int tolower

(

int

c

)

Definition at line 40 of file sk_ctype.c.

                   {
  if (isupper(c)) {
    return c + ('a' - 'A');
  }
  return c;
}

toupper()

int toupper

(

int

c

)

Definition at line 47 of file sk_ctype.c.

                   {
  if (islower(c)) {
    return c - ('a' - 'A');
  }
  return c;
}