src/SquidMath.cc

   1 #include "squid.h"
   2 #include "SquidMath.h"
   3
   4 int
   5 Math::intPercent(const int a, const int b)
   6 {
   7     return b ? ((int) (100.0 * a / b + 0.5)) : 0;
   8 }
   9
  10 int64_t
  11 Math::int64Percent(const int64_t a, const int64_t b)
  12 {
  13     return b ? ((int64_t) (100.0 * a / b + 0.5)) : 0;
  14 }
  15
  16 double
  17 Math::doublePercent(const double a, const double b)
  18 {
  19     return b ? (100.0 * a / b) : 0.0;
  20 }
  21
  22 double
  23 Math::doubleAverage(const double cur, const double newD, int N, const int max)
  24 {
  25     if (N > max)
  26         N = max;
  27
  28     return (cur * (N - 1.0) + newD) / N;
  29 }
  30
  31 int
  32 Math::intAverage(const int cur, const int newI, int n, const int max)
  33 {
  34     if (n > max)
  35         n = max;
  36
  37     return (cur * (n - 1) + newI) / n;
  38 }