banan-os/libc/ctype.cpp

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2023-01-16 19:13:11 +02:00
#include <ctype.h>
int isalnum(int c)
{
return isdigit(c) || isalpha(c);
}
int isalpha(int c)
{
return islower(c) || isupper(c);
}
int isascii(int c)
{
return c <= 0x7F;
}
int isblank(int c)
{
return c == ' ' || c == '\t';
}
int iscntrl(int c)
{
return c < 32 || c == 0x7F;
}
int isdigit(int c)
{
return '0' <= c && c <= '9';
}
int isgraph(int c)
{
return 0x21 <= c && c <= 0x7E;
}
int islower(int c)
{
return 'a' <= c && c <= 'z';
}
int isprint(int c)
{
return isgraph(c) || c == ' ';
}
int ispunct(int c)
{
return isgraph(c) && !isalnum(c);
}
int isspace(int c)
{
return c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' || c == '\v';
}
int isupper(int c)
{
return 'A' <= c && c <= 'Z';
}
int isxdigit(int c)
{
return isdigit(c) || ('a' <= c && c <= 'f') || ('A' <= c && c <= 'F');
}
2023-05-10 23:13:56 +03:00
int toupper(int c)
{
if (!islower(c))
return c;
return 'A' + (c - 'a');
}
int tolower(int c)
{
if (!isupper(c))
return c;
return 'a' + (c - 'A');
}