Results from timing floating point operations

[owenhealy]

I got these results by performing the operations on the fast loop increasing numberse of times and counting the number of fast loops per slow loop, then doing a linear regression. I have nothing to compare this method with to judge its accuracy, and I'd be interested if anyone else has different data.

Operation Time (in slow loops)

blank 2.33e-10
+ 8.71e-04
- 9.60e-04
* 8.35e-04
/ 3.92e-03
fabs 2.75e-04
ldexp 2.34e-03
exp 2.50e-02
sqrt 2.86e-02
asin 4.76e-02
acos 4.76e-02
atan2 3.12e-02
atan 1.82e-02
sin 2.04e-02
cos 2.22e-02
tan 2.27e-02
sinh 3.57e-02
cosh 3.33e-02
tanh 3.57e-02
frexp 2.41e-03
log10 2.56e-02
log 2.50e-02
pow 1.00e-01
ceil 4.39e-03
floor 3.58e-03
modf 4.74e-03
fmod 2.79e-03