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 */
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 */
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#ifndef LIBC_CTYPE_H_
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#ifndef LIBC_CTYPE_H_
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#define LIBC_CTYPE_H_
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#define LIBC_CTYPE_H_
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static inline int islower(int c)
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{
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    return ((c >= 'a') && (c <= 'z'));
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}
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static inline int isupper(int c)
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{
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    return ((c >= 'A') && (c <= 'Z'));
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}
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static inline int isalpha(int c)
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static inline int isalpha(int c)
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{
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{
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    return (((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')));
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    return (islower(c) || isupper(c));
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}
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}
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static inline int isdigit(int c)
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static inline int isdigit(int c)
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{
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{
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    return ((c >= '0') && (c <= '9'));
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    return ((c >= '0') && (c <= '9'));