Date: Mon, 29 Jun 2020 13:08:40 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r362781 - head/sys/compat/linuxkpi/common/include/linux Message-ID: <202006291308.05TD8eTP014019@repo.freebsd.org>
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Author: hselasky Date: Mon Jun 29 13:08:40 2020 New Revision: 362781 URL: https://svnweb.freebsd.org/changeset/base/362781 Log: Implement is_signed(), type_max() and type_min() function macros in the LinuxKPI. MFC after: 1 week Sponsored by: Mellanox Technologies Modified: head/sys/compat/linuxkpi/common/include/linux/kernel.h Modified: head/sys/compat/linuxkpi/common/include/linux/kernel.h ============================================================================== --- head/sys/compat/linuxkpi/common/include/linux/kernel.h Mon Jun 29 12:59:09 2020 (r362780) +++ head/sys/compat/linuxkpi/common/include/linux/kernel.h Mon Jun 29 13:08:40 2020 (r362781) @@ -564,4 +564,20 @@ linux_ratelimited(linux_ratelimit_t *rl) #define __is_constexpr(x) \ __builtin_constant_p(x) +#define is_signed(x) (((x)-1 / (x)2) == (x)0) + +#define type_max(x) ( \ + (sizeof(x) >= 8) ? (is_signed(x) ? INT64_MAX : UINT64_MAX) : \ + (sizeof(x) >= 4) ? (is_signed(x) ? INT32_MAX : UINT32_MAX) : \ + (sizeof(x) >= 2) ? (is_signed(x) ? INT16_MAX : UINT16_MAX) : \ + (is_signed(x) ? INT8_MAX : UINT8_MAX) \ +) + +#define type_min(x) ( \ + (sizeof(x) >= 8) ? (is_signed(x) ? INT64_MIN : 0) : \ + (sizeof(x) >= 4) ? (is_signed(x) ? INT32_MIN : 0) : \ + (sizeof(x) >= 2) ? (is_signed(x) ? INT16_MIN : 0) : \ + (is_signed(x) ? INT8_MIN : 0) \ +) + #endif /* _LINUX_KERNEL_H_ */
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