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-.\" Copyright (c) 2012, IBM Corporation.
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH __ppc_get_timebase 3 (date) "Linux man-pages (unreleased)"
-.SH NAME
-__ppc_get_timebase, __ppc_get_timebase_freq \- get the current value
-of the Time Base Register on Power architecture and its frequency.
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.B #include <sys/platform/ppc.h>
-.P
-.B uint64_t __ppc_get_timebase(void);
-.B uint64_t __ppc_get_timebase_freq(void);
-.fi
-.SH DESCRIPTION
-.BR __ppc_get_timebase ()
-reads the current value of the Time Base Register and returns its
-value, while
-.BR __ppc_get_timebase_freq ()
-returns the frequency in which the Time Base Register is updated.
-.P
-The Time Base Register is a 64-bit register provided by Power Architecture
-processors.
-It stores a monotonically incremented value that is updated at a
-system-dependent frequency that may be different from the processor
-frequency.
-.SH RETURN VALUE
-.BR __ppc_get_timebase ()
-returns a 64-bit unsigned integer that represents the current value of the
-Time Base Register.
-.P
-.BR __ppc_get_timebase_freq ()
-returns a 64-bit unsigned integer that represents the frequency at
-which the Time Base Register is updated.
-.SH STANDARDS
-GNU.
-.SH HISTORY
-.TP
-.BR __ppc_get_timebase ()
-.\" commit d9dc34cd569bcfe714fe8c708e58c028106e8b2e
-glibc 2.16.
-.TP
-.BR __ppc_get_timebase_freq ()
-.\" commit 8ad11b9a9cf1de82bd7771306b42070b91417c11
-glibc 2.17.
-.SH EXAMPLES
-The following program will calculate the time, in microseconds, spent
-between two calls to
-.BR __ppc_get_timebase ().
-.SS Program source
-\&
-.\" SRC BEGIN (__ppc_get_timebase.c)
-.EX
-#include <inttypes.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/platform/ppc.h>
-\&
-/* Maximum value of the Time Base Register: 2\[ha]60 \- 1.
-   Source: POWER ISA.  */
-#define MAX_TB 0xFFFFFFFFFFFFFFF
-\&
-int
-main(void)
-{
-    uint64_t tb1, tb2, diff;
-    uint64_t freq;
-\&
-    freq = __ppc_get_timebase_freq();
-    printf("Time Base frequency = %"PRIu64" Hz\en", freq);
-\&
-    tb1 = __ppc_get_timebase();
-\&
-    // Do some stuff...
-\&
-    tb2 = __ppc_get_timebase();
-\&
-    if (tb2 > tb1) {
-        diff = tb2 \- tb1;
-    } else {
-        /* Treat Time Base Register overflow.  */
-        diff = (MAX_TB \- tb2) + tb1;
-    }
-\&
-    printf("Elapsed time  = %1.2f usecs\en",
-           (double) diff * 1000000 / freq);
-\&
-    exit(EXIT_SUCCESS);
-}
-.EE
-.\" SRC END
-.SH SEE ALSO
-.BR time (2),
-.BR usleep (3)