OSX/libsecurity_cryptkit/lib/ellipticMeasure.h

   1 /*
   2         File:           ellipticMeasure.h
   3
   4         Contains:       xxx put contents here xxx
   5
   6
   7         Copyright:      Copyright (c) 1998,2011,2014 Apple Inc.
   8                 All rights reserved.
   9
  10         Change History (most recent first):
  11
  12         <7>     10/06/98        ap              Changed to compile with C++.
  13
  14         To Do:
  15 */
  16
  17 /* Copyright (c) 1998,2011,2014 Apple Inc.  All Rights Reserved.
  18  *
  19  * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT
  20  * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE
  21  * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE, INC. AND THE
  22  * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE,
  23  * INC.  ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
  24  * EXPOSE YOU TO LIABILITY.
  25  ***************************************************************************
  26  *
  27  * Measurement of feemods and mulgs withing an elliptic_simple() call.
  28  */
  29
  30 #include "feeDebug.h"
  31
  32 #ifdef  FEE_DEBUG
  33 #define ELLIPTIC_MEASURE        0
  34 #else   // FEE_DEBUG
  35 #define ELLIPTIC_MEASURE        0       /* always off */
  36 #endif  // FEE_DEBUG
  37
  38 #if     ELLIPTIC_MEASURE
  39
  40 extern int doEllMeasure;        // gather stats on/off */
  41 extern int bitsInN;
  42 extern int numFeeMods;
  43 extern int numMulgs;
  44
  45 #define START_ELL_MEASURE(n)            \
  46         doEllMeasure = 1;               \
  47         bitsInN = bitlen(n);            \
  48         numFeeMods = 0;                 \
  49         numMulgs = 0;
  50
  51 #define END_ELL_MEASURE         doEllMeasure = 0;
  52
  53 #define INCR_FEEMODS                    \
  54         if(doEllMeasure) {              \
  55                 numFeeMods++;           \
  56         }
  57
  58 #define INCR_MULGS                      \
  59         if(doEllMeasure) {              \
  60                 numMulgs++;             \
  61         }
  62
  63 /*
  64  * These two are used around mulg() calls in feemod() itself; they
  65  * inhibit the counting of those mulg() calls.
  66  */
  67 #define PAUSE_ELL_MEASURE                               \
  68         {                                               \
  69                 int tempEllMeasure = doEllMeasure;      \
  70                 doEllMeasure = 0;
  71
  72 #define RESUME_ELL_MEASURE                              \
  73                 doEllMeasure = tempEllMeasure;          \
  74         }
  75
  76 #else   // ELLIPTIC_MEASURE
  77
  78 #define START_ELL_MEASURE(n)
  79 #define END_ELL_MEASURE
  80 #define INCR_FEEMODS
  81 #define INCR_MULGS
  82 #define PAUSE_ELL_MEASURE
  83 #define RESUME_ELL_MEASURE
  84
  85 #endif  // ELLIPTIC_MEASURE