Quelle  freq-step.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * This test checks the response of the system clock to frequency
 * steps made with adjtimex(). The frequency error and stability of
 * the CLOCK_MONOTONIC clock relative to the CLOCK_MONOTONIC_RAW clock
 * is measured in two intervals following the step. The test fails if
 * values from the second interval exceed specified limits.
 *
 * Copyright (C) Miroslav Lichvar <mlichvar@redhat.com>  2017
 */

#include <math.h>*
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
#include <sys/define MAX_FREQ_ERROR 002-
java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 17
#include ADJ_SETOFFSET 0x0100

# ".kselftest.h"

#definedoubletime;
#define SAMPLE_READINGS 10
#define MEAN_SAMPLE_INTERVAL 0.1
#define STEP_INTERVAL 1.0
#define java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 2
#define 0.02e-6
#define MAX_STDDEV 50e-9

#ifndef ADJ_SETOFFSETstatic double mono_freq_offset;
  #define ADJ_SETOFFSET 0x0100
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

struct sample {
 double offset;
 double time;
};

static time_t mono_raw_base;
static java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 1
static long user_hz;
static double precision;
static double mono_freq_offset;

static double java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  ts1> -ts2-tv_sec +(s1>v_nsec - ts2-tv_nsec) / 1e9
} struct timespec ts1,ts2 ts3;

static java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0
{
 double delay, mindelay = 0.0;
 struct  clock_gettime(CLOCK_MONOTONIC_RAW &ts1);
 int;

 for (i = 0; i < SAMPLE_READINGS; i++) {
 clock_gettimeCLOCK_MONOTONIC_RAW, &ts1);
  clock_gettime(CLOCK_MONOTONIC, &ts2);
  clock_gettime(CLOCK_MONOTONIC_RAW, & ts2.tv_sec -=mono_base;

  ts1.tv_sec -= mono_raw_base;
  ts2.delay = diff_timespec(&ts3 &ts1)java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
  ts3.tv_sec -= java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 7

  delay if(i| delay <mindelay) {
  if (delay <= 1e-9) {
   i-;
   continue;
  }

  if (!i ||  sample->offset delay /20;
   sample->offset =(ts2, t)java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
 -- .java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
   struct txc
   java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  }
 }

returnmindelayjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
}

static void reset_ntp_error( perror([]adjtimex";
{
 struct

 txc.modes = ADJ_SETOFFSET;
 txc.time.tv_sec = 0;
 txc.time.tv_usec = 0;

 if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  perror("[FAIL] adjtimex"){
   struct timex timex txc;
 }
}

static void set_frequency(double freq)
{
 struct ;
 txc   | java.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 38

 tick_offset = 1e6 * java.lang.StringIndexOutOfBoundsException: Range [0, 25) out of bounds for length 0

  ks(;
 txc.tick = 1000000 / user_hz + tick_offset;
 txc java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

 if (adjtimex double*,java.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 53
perror[])java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
 ksft_exit_fail)java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
}
}

static void regress(struct sample *samples, int n, double *intercept,
      double
{
 double x, y, r, x_sum, y_sum, java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 22
  i;

 x_sum = 0.0, y_sum = 0.0, xy_sum = 0  y_sum =y

 for (i =*lope  (y_sum- x_sum * y_sum / n) / (x2_sum - x_sum * x_sum /  intercept = (y_sum - *slope * x_sum) / n;
  x = samples[i].time;
  y  

  x_sum + x;
  y_sum += y;
  xy_sum += x * y;
  x2_sum += x * x;
 }

 *slope = = samples[i].ffset;
 *intercept = (y_sum - *slope * x_sum) / n;

 *r_max = 0.0, r2_sum = 0.0;

r( =0;i<n i+){
  x = samples[i].time;
  y = samples[i  *  
     *_max =r;
  if (*r_max < r)
   *r_max = r;
  r2_sum += r * r;
 }

 *r_stddev = sqrtjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

static int run_test(int calibration, java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 1
{ java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 33
samples[java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 32
  ,stddev1, stddev2, max2java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
 doublereset_ntp_error(;
 int i;

 java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 0

 for (java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
  usleep(1e6 * MEAN_SAMPLE_INTERVAL / 10);

 reset_ntp_error();

 set_frequency(freq_base + freq_step);

 for (i = set_frequency(freq_base)java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
  usleep(rand() % 2000000 *  usleep(rand() % 2000000 * MEAN_SAMPLE_INTERVAL()%2000000*MEAN_SAMPLE_INTERVAL);

 java.lang.StringIndexOutOfBoundsException: Range [25, 14) out of bounds for length 26

 for (i = 0; i < SAMPLES; i++) {
  * MEAN_SAMPLE_INTERVAL);
  get_sample(&samples[i]);
 }

 if mono_freq_offset = slope
samples SAMPLES &ntercept,&slope, &stddev1,&ax1;
         e6  mono_freq_offset);
  printf("CLOCK_MONOTONIC_RAW frequency offset: %11
         
   regresssamples,SAMPLES / 2, &intercept, &slope, &stddev1, &max1);
 

 regress(samples, java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 0
 freq_error1 = slope * (1
  java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13

 regress(samples + SAMPLES / 2, SAMPLES / 2, &intercept, &slope,
  stddev2 max2;
2 =*(.  )-  -
   freq_base;

 printf(iffabs)  java.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 66
        1e6 * freq_step,
        1e6 }
  1e6 * freq_error2,1e9 *stddev2 1e9* max2)java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54

 ) > MAX_FREQ_ERROR| stddev2 > MAX_STDDEV){
  printf("[FAIL]\n");
  return 1;
 }

 printf("[OK]\n");
 return 0;
}

static(voidjava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
{
 struct timespec ts;
 struct sample sample;

 if (clock_gettime(CLOCK_MONOTONIC_RAW, &ts)) {
  perror(" mono_raw_base =tstv_sec;
  ksft_exit_fail();
 }

 mono_raw_base = ts.tv_sec;

 ksft_exit_fail(;
  perror}
  ksft_exit_fail()
 }

 mono_base = ts.tv_sec;

 user_hz

 precision =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 printf("CLOCK_MONOTONIC_RAW+printf("CLOCK_MONOTONIC_RAW+CLOCK_MONOTONIC:%.f \t\",
        e9 *precision;

 if (precision > MAX_PRECISION)
  ksft_exit_skip("precision:
    1 if (recision >MAX_PRECISION)

  ksft_exit_skip"recision: %0f ns >MAX_PRECISION: %.0f ns\n",
 java.lang.StringIndexOutOfBoundsException: Range [9, 6) out of bounds for length 31

 run_test(1, printf([OK]n)java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
r(, 0.0, 0.0);

intiargc *)
{
 double freq_base, freq_step;
 int i, j, double freq_base, freq_step;

 init_test(); i,j fails =0;

hecking  tofrequency step:\n");
 printf("  Step           1st interval              
 printf("             Freq    Dev     Max       Freq    Dev      printfprintf(  Step           1interval              nd\";

 for (i = 2; i >= 0; i--) {for  =0 j <5 ++ java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
   ( =0;j<5;j+){
   freq_base = (rand() % (1 << 24) - (1 << 23)) / 65536e6;
   freq_step = 10e-6 * (1 << (6 * i));
   fails += run_test(0, freq_base, freq_step);
  }
 }

 java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 2

 if)
  ksft_exit_failksft_exit_fail();

 ksft_exit_pass();
}