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#ifndef INCLUDED_SAL_RTL_SOURCE_SURROGATES_HXX
#define INCLUDED_SAL_RTL_SOURCE_SURROGATES_HXX

#include "sal/config.h"

#define SAL_RTL_FIRST_HIGH_SURROGATE 0xD800
#define SAL_RTL_LAST_HIGH_SURROGATE 0xDBFF
#define SAL_RTL_FIRST_LOW_SURROGATE 0xDC00
#define SAL_RTL_LAST_LOW_SURROGATE 0xDFFF

#define SAL_RTL_IS_HIGH_SURROGATE(utf16) \
    ((utf16) >= SAL_RTL_FIRST_HIGH_SURROGATE && \
     (utf16) <= SAL_RTL_LAST_HIGH_SURROGATE)

#define SAL_RTL_IS_LOW_SURROGATE(utf16) \
    ((utf16) >= SAL_RTL_FIRST_LOW_SURROGATE && \
     (utf16) <= SAL_RTL_LAST_LOW_SURROGATE)

#define SAL_RTL_COMBINE_SURROGATES(high, low) \
    ((((high) - SAL_RTL_FIRST_HIGH_SURROGATE) << 10) + \
     ((low) - SAL_RTL_FIRST_LOW_SURROGATE) + 0x10000)

#endif

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