dolysis
/
benchmark
mirror of https://github.com/google/benchmark.git
3
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

refactor fitting curve

This commit is contained in:
Ismael 2016-05-23 19:19:29 +02:00
parent 5f9823bd92
commit 5e52d2d6c0
1 changed files with 16 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
src/minimal_leastsq.cc
View File

@ -20,19 +20,22 @@
#include <math.h>
// Internal function to calculate the different scalability forms
double fittingCurve(double N, benchmark::BigO Complexity) {
if (Complexity == benchmark::O_N)
return N;
else if (Complexity == benchmark::O_N_Squared)
return pow(N, 2);
else if (Complexity == benchmark::O_N_Cubed)
return pow(N, 3);
else if (Complexity == benchmark::O_log_N)
return log2(N);
else if (Complexity == benchmark::O_N_log_N)
return N * log2(N);
return 1; // Default value for O_1
double fittingCurve(double n, benchmark::BigO complexity) {
switch (complexity) {
case benchmark::O_N:
return n;
case benchmark::O_N_Squared:
return pow(n, 2);
case benchmark::O_N_Cubed:
return pow(n, 3);
case benchmark::O_log_N:
return log2(n);
case benchmark::O_N_log_N:
return n * log2(n);
case benchmark::O_1:
default:
return 1;
}
}
// Internal function to find the coefficient for the high-order term in the running time, by minimizing the sum of squares of relative error.