Implement is_signed(), type_max() and type_min() function macros in the
LinuxKPI. MFC after: 1 week Sponsored by: Mellanox Technologies
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=362781
@ -564,4 +564,20 @@ linux_ratelimited(linux_ratelimit_t *rl)
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#define __is_constexpr(x) \
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#define __is_constexpr(x) \
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__builtin_constant_p(x)
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__builtin_constant_p(x)
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#define is_signed(x) (((x)-1 / (x)2) == (x)0)
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#define type_max(x) ( \
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(sizeof(x) >= 8) ? (is_signed(x) ? INT64_MAX : UINT64_MAX) : \
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(sizeof(x) >= 4) ? (is_signed(x) ? INT32_MAX : UINT32_MAX) : \
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(sizeof(x) >= 2) ? (is_signed(x) ? INT16_MAX : UINT16_MAX) : \
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(is_signed(x) ? INT8_MAX : UINT8_MAX) \
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)
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#define type_min(x) ( \
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(sizeof(x) >= 8) ? (is_signed(x) ? INT64_MIN : 0) : \
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(sizeof(x) >= 4) ? (is_signed(x) ? INT32_MIN : 0) : \
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(sizeof(x) >= 2) ? (is_signed(x) ? INT16_MIN : 0) : \
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(is_signed(x) ? INT8_MIN : 0) \
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)
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#endif /* _LINUX_KERNEL_H_ */
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#endif /* _LINUX_KERNEL_H_ */
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