33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
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/* __STDC_WANT_LIB_EXT1__ redefinition guard
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This file is part of the Public Domain C Library (PDCLib).
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Permission is granted to use, modify, and / or redistribute at will.
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*/
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#ifndef __STDC_WANT_LIB_EXT1__
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#ifdef __STDC_WANT_LIB_EXT1_PREVIOUS__
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#if __STDC_WANT_LIB_EXT1_PREVIOUS__ != -1
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#error __STDC_WANT_LIB_EXT1__ undefined when it was defined earlier.
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#endif
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#else
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#define __STDC_WANT_LIB_EXT1_PREVIOUS__ -1
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#endif
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#else
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#if ( __STDC_WANT_LIB_EXT1__ + 0 ) == 0 && ( 0 - __STDC_WANT_LIB_EXT1__ - 1 ) == 1
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#error __STDC_WANT_LIB_EXT1__ defined but empty. Should be an integer value.
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#endif
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#ifdef __STDC_WANT_LIB_EXT1_PREVIOUS__
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#if ( __STDC_WANT_LIB_EXT1__ + 0 ) != __STDC_WANT_LIB_EXT1_PREVIOUS__
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#error __STDC_WANT_LIB_EXT1__ redefined from previous value.
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#endif
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#else
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#if ( __STDC_WANT_LIB_EXT1__ + 0 ) == 0
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#define __STDC_WANT_LIB_EXT1_PREVIOUS__ 0
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#elif ( __STDC_WANT_LIB_EXT1__ + 0 ) == 1
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#define __STDC_WANT_LIB_EXT1_PREVIOUS__ 1
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#else
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#error __STDC_WANT_LIB_EXT1__ set to value other than 0,1 -- undefined behavior
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#endif
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#endif
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#endif
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