{\left(a \cdot \sin \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2} + {\left(b \cdot \cos \left(\frac{angle}{180} \cdot \pi\right)\right)}^{2}{b}^{2} + {\left(\left|a \cdot \sin \left(angle \cdot \left(\pi \cdot 0.005555555555555556\right)\right)\right|\right)}^{1.5} \cdot \sqrt{\left|a \cdot \sin \left(angle \cdot \left(\pi \cdot 0.005555555555555556\right)\right)\right|}(FPCore (a b angle) :precision binary64 (+ (pow (* a (sin (* (/ angle 180.0) PI))) 2.0) (pow (* b (cos (* (/ angle 180.0) PI))) 2.0)))
(FPCore (a b angle) :precision binary64 (+ (pow b 2.0) (* (pow (fabs (* a (sin (* angle (* PI 0.005555555555555556))))) 1.5) (sqrt (fabs (* a (sin (* angle (* PI 0.005555555555555556)))))))))
double code(double a, double b, double angle) {
return pow((a * sin((angle / 180.0) * ((double) M_PI))), 2.0) + pow((b * cos((angle / 180.0) * ((double) M_PI))), 2.0);
}
double code(double a, double b, double angle) {
return pow(b, 2.0) + (pow(fabs(a * sin(angle * (((double) M_PI) * 0.005555555555555556))), 1.5) * sqrt(fabs(a * sin(angle * (((double) M_PI) * 0.005555555555555556)))));
}













Bits error versus a













Bits error versus b













Bits error versus angle
Results
| Alternative 1 | |
|---|---|
| Error | 20.5 |
| Cost | 19904 |
| Alternative 2 | |
|---|---|
| Error | 20.6 |
| Cost | 19904 |
| Alternative 3 | |
|---|---|
| Error | 21.9 |
| Cost | 20104 |
| Alternative 4 | |
|---|---|
| Error | 23.7 |
| Cost | 14664 |
| Alternative 5 | |
|---|---|
| Error | 23.9 |
| Cost | 13825 |
| Alternative 6 | |
|---|---|
| Error | 23.9 |
| Cost | 8194 |
| Alternative 7 | |
|---|---|
| Error | 23.9 |
| Cost | 7880 |
| Alternative 8 | |
|---|---|
| Error | 26.1 |
| Cost | 7552 |
| Alternative 9 | |
|---|---|
| Error | 26.1 |
| Cost | 7552 |
| Alternative 10 | |
|---|---|
| Error | 53.1 |
| Cost | 64 |

Initial program 20.5
Taylor expanded around 0 20.6
rmApplied div-inv_binary64_7520.5
Applied associate-*l*_binary64_1920.5
Simplified20.5
rmApplied add-sqr-sqrt_binary64_10020.5
Simplified20.5
Simplified20.5
rmApplied add-sqr-sqrt_binary64_10020.5
Applied associate-*r*_binary64_1820.5
Simplified20.5
Simplified20.5
Final simplification20.5
herbie shell --seed 2021014
(FPCore (a b angle)
:name "ab-angle->ABCF A"
:precision binary64
(+ (pow (* a (sin (* (/ angle 180.0) PI))) 2.0) (pow (* b (cos (* (/ angle 180.0) PI))) 2.0)))