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https://github.com/justinian/jsix.git
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Justin C. Miller
95a35cd0bf
Moving libc from its separate repo into this one, minor resulting build fixes, and a hacky way to add -I for libc headers in builds.
58 lines
2.5 KiB
C
58 lines
2.5 KiB
C
#pragma once
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/* Auxiliary PDCLib code <aux.h>
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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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/* -------------------------------------------------------------------------- */
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/* You should not have to edit anything in this file; if you DO have to, it */
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/* would be considered a bug / missing feature: notify the author(s). */
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/* -------------------------------------------------------------------------- */
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/* -------------------------------------------------------------------------- */
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/* Standard Version */
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/* -------------------------------------------------------------------------- */
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/* Many a compiler gets this wrong, so you might have to hardcode it instead. */
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#if __STDC__ != 1
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#error Compiler does not define _ _STDC_ _ to 1 (not standard-compliant)!
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#endif
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#ifdef __cplusplus
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#define restrict __restrict__
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#endif
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#ifndef __STDC_HOSTED__
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#error Compiler does not define _ _STDC_HOSTED_ _ (not standard-compliant)!
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#elif __STDC_HOSTED__ == 0
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#define _PDCLIB_HOSTED 0
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#elif __STDC_HOSTED__ == 1
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#define _PDCLIB_HOSTED 1
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#else
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#error Compiler does not define _ _STDC_HOSTED_ _ to 0 or 1 (not standard-compliant)!
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#endif
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/* -------------------------------------------------------------------------- */
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/* Helper macros: */
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/* _PDCLIB_cc( x, y ) concatenates two preprocessor tokens without extending */
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/* _PDCLIB_concat( x, y ) concatenates two preprocessor tokens with extending */
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/* _PDCLIB_static_assert( e, m ) does a compile-time assertion of expression */
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/* e, with m as the failure message. */
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/* _PDCLIB_TYPE_SIGNED( type ) resolves to true if type is signed. */
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/* _PDCLIB_TWOS_COMPLEMENT( type ) resolves to true if two's complement is */
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/* used for type. */
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/* -------------------------------------------------------------------------- */
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#define _PDCLIB_cc( x, y ) x ## y
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#define _PDCLIB_concat( x, y ) _PDCLIB_cc( x, y )
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#define _PDCLIB_static_assert( e, m ) enum { _PDCLIB_concat( _PDCLIB_assert_, __LINE__ ) = 1 / ( !!(e) ) }
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#define _PDCLIB_TYPE_SIGNED( type ) (((type) -1) < 0)
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#define _PDCLIB_TWOS_COMPLEMENT( type ) ((type) ~ (type) 0 < 0 )
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#define _PDCLIB_symbol2value( x ) #x
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#define _PDCLIB_symbol2string( x ) _PDCLIB_symbol2value( x )
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