[libc][POSIX] Add clock_settime() function for NVPTX targets

libc/docs/headers/time.rst

@@ -71,7 +71,7 @@ Implementation Status
 +---------------------+---------+---------+---------+-----------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
 | clock_nanosleep     |         |         |         |                 |         |         |         |         |         |         |         |         |         |
 +---------------------+---------+---------+---------+-----------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
-| clock_settime       | |check| | |check| |         |     |check|     |         |         |         |         |         |         |         |         |         |
+| clock_settime       | |check| | |check| |         |     |check|     |         |         |         |         |         |         |         |         | |check| |
 +---------------------+---------+---------+---------+-----------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
 | ctime               | |check| | |check| |         |     |check|     |         |         |         |         |         |         |         |         |         |
 +---------------------+---------+---------+---------+-----------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+

libc/src/time/gpu/clock.cpp

@@ -1,4 +1,4 @@
-//===-- GPU implementation of the clock function --------------------------===//
+//===---------- GPU implementation of the clock function ------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

libc/src/time/gpu/clock_gettime.cpp

@@ -1,4 +1,4 @@
-//===---------- GPU implementation of the POSIX clock_gettime function ----===//
+//===---------- GPU implementation of the clock_gettime function ----------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

libc/src/time/gpu/clock_settime.cpp

@@ -0,0 +1,7 @@
+//===---------- GPU implementation of the clock_settime function ----------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//

libc/src/time/gpu/nanosleep.cpp

@@ -1,4 +1,4 @@
-//===-- GPU implementation of the nanosleep function ----------------------===//
+//===---------- GPU implementation of the nanosleep function --------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

libc/src/time/gpu/timespec_get.cpp

@@ -1,4 +1,4 @@
-//===-- Implementation of timespec_get for gpu ----------------------------===//
+//===---------- GPU implementation of the timespec_get function -----------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.