2007-01-26 03:25:19 +00:00
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#ifndef _CTYPE_H
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#define _CTYPE_H
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/** @file
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*
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* Character types
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*/
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2008-05-19 16:34:17 +01:00
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#define isdigit(c) ((c) >= '0' && (c) <= '9')
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#define islower(c) ((c) >= 'a' && (c) <= 'z')
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#define isupper(c) ((c) >= 'A' && (c) <= 'Z')
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2007-01-26 03:25:19 +00:00
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static inline unsigned char tolower(unsigned char c)
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{
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if (isupper(c))
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c -= 'A'-'a';
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return c;
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}
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static inline unsigned char toupper(unsigned char c)
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{
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if (islower(c))
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c -= 'a'-'A';
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return c;
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}
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#endif /* _CTYPE_H */
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