icuSources/test/perf/howExpensiveIs/sieve.h

   1 /*
   2  ***********************************************************************
   3  * © 2016 and later: Unicode, Inc. and others.
   4  * License & terms of use: http://www.unicode.org/copyright.html#License
   5  ***********************************************************************
   6  ***********************************************************************
   7  * Copyright (c) 2011-2012,International Business Machines
   8  * Corporation and others.  All Rights Reserved.
   9  ***********************************************************************
  10  */
  11
  12 #ifndef SIEVE_H
  13 #define SIEVE_H
  14
  15 #ifndef U_LOTS_OF_TIMES
  16 #define U_LOTS_OF_TIMES 1000000
  17 #endif
  18
  19 #include "unicode/utypes.h"
  20 /**
  21  * Calculate the standardized sieve time (1 run)
  22  */
  23 U_INTERNAL double uprv_calcSieveTime(void);
  24
  25 /**
  26  * Calculate the mean time, with margin of error
  27  * @param times array of times (modified/sorted)
  28  * @param timeCount length of array - on return, how many remain after throwing out outliers
  29  * @param marginOfError out parameter: gives +/- margin of err at 95% confidence
  30  * @return the mean time, or negative if error/imprecision.
  31  */
  32 U_INTERNAL double uprv_getMeanTime(double *times, uint32_t *timeCount, double *marginOfError);
  33
  34 /**
  35  * Get the standardized sieve time. (Doesn't recalculate if already computed.
  36  * @param marginOfError out parameter: gives +/- margin of error at 95% confidence.
  37  * @return the mean time, or negative if error/imprecision.
  38  */
  39 U_INTERNAL double uprv_getSieveTime(double *marginOfError);
  40
  41 #endif