68 lines
1.2 KiB
C
68 lines
1.2 KiB
C
/***
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*ismbalph.c - Test if character is alphabetic (MBCS)
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*
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* Copyright (c) 1985-1992, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Test if character is alphabetic (MBCS)
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*
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*Revision History:
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* 11-19-92 KRS Ported from 16-bit sources.
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*
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*******************************************************************************/
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#ifdef _MBCS
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#include <cruntime.h>
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#include <ctype.h>
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#include <mbdata.h>
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#include <mbctype.h>
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#include <mbstring.h>
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/***
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* _ismbcalpha - Test if character is alphabetic (MBCS)
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*
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*Purpose:
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* Test if character is alphabetic.
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* Handles MBCS chars correctly.
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*
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* Note: Use test against 0x00FF instead of _ISLEADBYTE
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* to ensure that we don't call SBCS routine with a two-byte
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* value.
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*
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*Entry:
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* unsigned int c = character to test
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*
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*Exit:
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* Returns TRUE if c is alphabetic, else FALSE
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*
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*Exceptions:
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*
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*******************************************************************************/
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int _CRTAPI1 _ismbcalpha(c)
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unsigned int c;
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{
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if (c > 0x00FF)
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#ifdef _MBCS_OS
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return (0);
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#else
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{
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if (_mbascii)
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return (
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((c >= _MBLOWERLOW) && (c <= _MBLOWERHIGH)) ||
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((c >= _MBUPPERLOW) && (c <= _MBUPPERHIGH))
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);
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else
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return (0);
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}
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#endif
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else
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return (isalpha(c)); // macro version
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}
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#endif /* _MBCS */
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