Date: Thu, 2 Dec 2021 09:00:28 GMT From: Wojciech Macek <wma@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: efa5d3831b0f - main - sys/libkern.h: Add type conversion helpers Message-ID: <202112020900.1B290SgE091636@gitrepo.freebsd.org>
next in thread | raw e-mail | index | archive | help
The branch main has been updated by wma: URL: https://cgit.FreeBSD.org/src/commit/?id=efa5d3831b0f0938115436be78f173366330a2ca commit efa5d3831b0f0938115436be78f173366330a2ca Author: Hubert Mazur <hum@semihalf.com> AuthorDate: 2021-11-26 09:20:04 +0000 Commit: Wojciech Macek <wma@FreeBSD.org> CommitDate: 2021-12-02 08:18:48 +0000 sys/libkern.h: Add type conversion helpers Add helper functions for 32 and 64 bit unsigned to signed integers conversions. Reviewed by: Sponsored by: Alstom Obtained from: Semihalf Differential revision: https://reviews.freebsd.org/D33162 --- sys/sys/libkern.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/sys/sys/libkern.h b/sys/sys/libkern.h index 147eba9bd1bd..41844fa7490e 100644 --- a/sys/sys/libkern.h +++ b/sys/sys/libkern.h @@ -226,6 +226,22 @@ rindex(const char *p, int ch) return (strrchr(p, ch)); } +static __inline int64_t +signed_extend64(uint64_t bitmap, int lsb, int width) +{ + + return ((int64_t)(bitmap << (63 - lsb - (width - 1)))) >> + (63 - (width - 1)); +} + +static __inline int32_t +signed_extend32(uint32_t bitmap, int lsb, int width) +{ + + return ((int32_t)(bitmap << (31 - lsb - (width - 1)))) >> + (31 - (width - 1)); +} + /* fnmatch() return values. */ #define FNM_NOMATCH 1 /* Match failed. */
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?202112020900.1B290SgE091636>