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21 lines
497 B
21 lines
497 B
2 years ago
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/* CC0 (Public domain) - see LICENSE file for details */
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#ifndef CCAN_ALIGNOF_H
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#define CCAN_ALIGNOF_H
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#include "config.h"
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/**
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* ALIGNOF - get the alignment of a type
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* @t: the type to test
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*
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* This returns a safe alignment for the given type.
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*/
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#if HAVE_ALIGNOF
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/* A GCC extension. */
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#define ALIGNOF(t) __alignof__(t)
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#else
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/* Alignment by measuring structure padding. */
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#define ALIGNOF(t) ((char *)(&((struct { char c; t _h; } *)0)->_h) - (char *)0)
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#endif
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#endif /* CCAN_ALIGNOF_H */
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