fmath performance(2015/05/06)

gistfile1.txt

# K frontend
$ FCCpx -Kfast,nounroll,noswp exp_bench.cpp fmath.cpp
exp_bench.cpp:
fmath.cpp:
"fmath.cpp", line 30: warning: variable "fmath::local::LOG_TABLE_SIZE" was declared but never referenced
  const size_t LOG_TABLE_SIZE = 12;
               ^


# K native
$ ./a.out
exp                     119.04 1.635514436087156064e+05 0.000000e+00 0.000000e+00
fmath:exp(double)        21.89 1.635514436087156064e+05 7.572649e-16 1.774574e-16