Measured Accuracy of VML Functions
|
|
Default processor |
Pentium® III processor |
Pentium® 4 processor |
Itanium® processor |
||||||||||||
|
float |
double |
float |
double |
float |
double |
float |
double |
|||||||||
|
HA |
LA |
HA |
LA |
HA |
LA |
HA |
LA |
HA |
LA |
HA |
LA |
HA |
LA |
HA |
LA |
|
|
Inv |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
3.33 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
|
Div |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
3.80 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
|
Sqrt |
0.58 |
0.58 |
0.70 |
0.70 |
0.77 |
0.77 |
0.70 |
0.70 |
0.77 |
3.16 |
0.50 |
1.85 |
0.50 |
0.50 |
0.50 |
0.50 |
|
InvSqrt |
0.57 |
0.57 |
0.77 |
0.77 |
0.97 |
0.96 |
0.77 |
0.77 |
0.97 |
3.64 |
0.50 |
1.01 |
0.50 |
0.50 |
0.50 |
0.50 |
|
Cbrt |
0.59 |
0.58 |
0.69 |
0.69 |
0.59 |
0.58 |
0.69 |
0.69 |
0.91 |
2.02 |
0.52 |
1.99 |
0.51 |
0.51 |
0.50 |
0.50 |
|
InvCbrt |
0.83 |
0.83 |
0.61 |
0.61 |
0.83 |
0.83 |
0.61 |
0.61 |
0.87 |
1.30 |
0.53 |
2.54 |
0.50 |
0.50 |
0.50 |
0.50 |
|
Pow |
2.03 |
2.37 |
1.47 |
1.47 |
2.03 |
2.37 |
1.47 |
1.47 |
0.56 |
0.56 |
0.52 |
2.50 |
0.50 |
0.50 |
0.50 |
0.50 |
|
Exp |
0.50 |
0.50 |
0.79 |
0.79 |
0.61 |
0.61 |
0.79 |
0.79 |
0.55 |
1.93 |
0.74 |
3.51 |
0.52 |
0.52 |
0.52 |
0.52 |
|
Ln |
0.72 |
0.72 |
0.67 |
0.67 |
0.72 |
0.72 |
0.67 |
0.67 |
0.53 |
1.07 |
0.53 |
3.04 |
0.51 |
0.51 |
0.51 |
0.51 |
|
Log10 |
0.70 |
0.70 |
0.93 |
0.93 |
0.70 |
0.70 |
0.93 |
0.93 |
0.51 |
1.62 |
0.55 |
3.59 |
0.51 |
0.51 |
0.51 |
0.51 |
|
Cos |
0.80 |
0.80 |
0.92 |
0.92 |
0.80 |
2.00 |
0.92 |
0.92 |
0.80 |
2.29 |
0.51 |
0.51 |
0.50 |
0.50 |
0.51 |
0.51 |
|
Sin |
0.80 |
0.80 |
0.92 |
0.92 |
0.80 |
2.00 |
0.92 |
0.92 |
0.80 |
2.35 |
0.51 |
0.51 |
0.50 |
1.97 |
0.51 |
0.51 |
|
SinCos |
0.56 |
0.55 |
0.82 |
0.83 |
0.56 |
1.40 |
0.82 |
0.83 |
0.56 |
1.81 |
0.51 |
1.50 |
0.50 |
0.50 |
0.50 |
0.50 |
|
Tan |
0.94 |
0.94 |
0.97 |
2.18 |
0.94 |
3.60 |
0.97 |
2.18 |
0.94 |
4.04 |
0.97 |
3.42 |
0.50 |
0.50 |
0.50 |
0.50 |
|
Acos |
0.54 |
0.54 |
0.64 |
0.64 |
0.79 |
26.0 |
0.64 |
0.64 |
0.76 |
2.50 |
0.77 |
3.18 |
0.50 |
0.50 |
0.51 |
0.51 |
|
Asin |
0.54 |
0.54 |
0.65 |
0.65 |
0.92 |
3.60 |
0.65 |
0.65 |
0.83 |
2.27 |
0.81 |
2.09 |
0.50 |
0.50 |
0.51 |
0.51 |
|
Atan |
0.61 |
0.61 |
0.85 |
0.85 |
0.88 |
3.68 |
0.85 |
0.85 |
0.88 |
3.68 |
0.85 |
3.28 |
0.50 |
0.50 |
0.50 |
0.50 |
|
Atan2 |
0.75 |
0.75 |
0.58 |
0.58 |
0.95 |
3.87 |
0.58 |
0.58 |
0.78 |
3.08 |
0.78 |
3.92 |
0.50 |
0.50 |
0.50 |
0.50 |
|
Cosh |
0.50 |
0.50 |
0.81 |
0.81 |
0.61 |
0.61 |
0.81 |
0.81 |
0.75 |
2.21 |
0.76 |
4.04 |
0.50 |
0.50 |
0.50 |
0.50 |
|
Sinh |
0.50 |
0.50 |
0.89 |
0.89 |
0.50 |
0.50 |
0.89 |
0.89 |
0.50 |
3.33 |
0.77 |
3.22 |
0.51 |
0.51 |
0.51 |
0.51 |
|
Tanh |
0.76 |
0.76 |
0.88 |
0.88 |
0.76 |
0.76 |
0.88 |
0.88 |
0.50 |
2.09 |
0.79 |
0.79 |
0.51 |
0.51 |
0.52 |
0.52 |
|
Acosh |
0.50 |
0.50 |
0.75 |
0.75 |
0.88 |
0.88 |
0.75 |
0.75 |
0.88 |
2.86 |
0.75 |
3.00 |
0.51 |
0.51 |
0.52 |
0.54 |
|
Asinh |
0.70 |
0.70 |
0.81 |
0.81 |
0.88 |
0.88 |
0.81 |
0.81 |
0.88 |
3.42 |
0.81 |
1.90 |
0.51 |
0.51 |
0.52 |
0.52 |
|
Atanh |
0.65 |
0.65 |
0.75 |
0.75 |
0.87 |
0.87 |
0.75 |
0.75 |
0.83 |
2.64 |
0.65 |
3.01 |
0.51 |
0.51 |
0.52 |
0.52 |
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