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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'));
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}
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}
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static inline int isalnum(int c)
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{
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    return (isalpha(c) || isdigit(c));
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}
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static inline int isspace(int c)
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static inline int isspace(int c)
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{
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{
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    switch(c) {
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    switch (c) {
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    case ' ':
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    case ' ':
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    case '\n':
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    case '\n':
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    case '\t':
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    case '\t':
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    case '\f':
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    case '\f':
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    case '\r':
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    case '\r':