mirror of
https://github.com/justinian/jsix.git
synced 2025-12-10 00:14:32 -08:00
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
|
|
/* Auxiliary PDCLib code <aux.h>
|
|
|
|
This file is part of the Public Domain C Library (PDCLib).
|
|
Permission is granted to use, modify, and / or redistribute at will.
|
|
*/
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
/* You should not have to edit anything in this file; if you DO have to, it */
|
|
/* would be considered a bug / missing feature: notify the author(s). */
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
/* Standard Version */
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
/* Many a compiler gets this wrong, so you might have to hardcode it instead. */
|
|
|
|
#if __STDC__ != 1
|
|
#error Compiler does not define _ _STDC_ _ to 1 (not standard-compliant)!
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
#define restrict __restrict__
|
|
#endif
|
|
|
|
#ifndef __STDC_HOSTED__
|
|
#error Compiler does not define _ _STDC_HOSTED_ _ (not standard-compliant)!
|
|
#elif __STDC_HOSTED__ == 0
|
|
#define _PDCLIB_HOSTED 0
|
|
#elif __STDC_HOSTED__ == 1
|
|
#define _PDCLIB_HOSTED 1
|
|
#else
|
|
#error Compiler does not define _ _STDC_HOSTED_ _ to 0 or 1 (not standard-compliant)!
|
|
#endif
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
/* Helper macros: */
|
|
/* _PDCLIB_cc( x, y ) concatenates two preprocessor tokens without extending */
|
|
/* _PDCLIB_concat( x, y ) concatenates two preprocessor tokens with extending */
|
|
/* _PDCLIB_static_assert( e, m ) does a compile-time assertion of expression */
|
|
/* e, with m as the failure message. */
|
|
/* _PDCLIB_TYPE_SIGNED( type ) resolves to true if type is signed. */
|
|
/* _PDCLIB_TWOS_COMPLEMENT( type ) resolves to true if two's complement is */
|
|
/* used for type. */
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
#define _PDCLIB_cc( x, y ) x ## y
|
|
#define _PDCLIB_concat( x, y ) _PDCLIB_cc( x, y )
|
|
|
|
#define _PDCLIB_static_assert( e, m ) enum { _PDCLIB_concat( _PDCLIB_assert_, __LINE__ ) = 1 / ( !!(e) ) }
|
|
|
|
#define _PDCLIB_TYPE_SIGNED( type ) (((type) -1) < 0)
|
|
#define _PDCLIB_TWOS_COMPLEMENT( type ) ((type) ~ (type) 0 < 0 )
|
|
|
|
#define _PDCLIB_symbol2value( x ) #x
|
|
#define _PDCLIB_symbol2string( x ) _PDCLIB_symbol2value( x )
|