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History log of /src/lib/libc/gen/timespec_get.c
RevisionDateAuthorComments
 1.3  21-Apr-2025  nia libc: C23: Add TIME_MONOTONIC as a base for timespec_get

PR standards/58608
 1.2  04-Oct-2016  christos branches: 1.2.2;
return 0 on unsupported bases.
 1.1  04-Oct-2016  kamil Add timespec_get(3) in <time.h> and enable unconditionally struct timespec

These changes conforms to the C11 standard
References:
- 7.27.1/3 Components of time (struct timespec)
- 7.27.2.5 The timespec_get function

According to ISO/IEC 9899:201x (draft) <time.h> defines the timespec
structure and declares the timespec_get(3) function with TIME_UTC
definition.

According to a C++17 standard draft <ctime> offers the same interface in
the std:: namespace.

The timespec_get function modifies the timespec object pointed by ts
to hold the current calendar time in the given base. The standard notes
only the TIME_UTC base with implementation defined value, set it to 1
as zero is reserved for error handling. Once operation was successful this
function returns passed base, otherwise exits with zero.

The timespec struct was already part of the POSIX standard in <time.h>.

Enable this interface unconditionally in the header to allow to use it
in a code prior C11 and C++17 as an extension.

Review notes from <christos>
 1.2.2.2  04-Nov-2016  pgoyette Sync with HEAD
 1.2.2.1  04-Oct-2016  pgoyette file timespec_get.c was added on branch pgoyette-localcount on 2016-11-04 14:48:52 +0000

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