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| 1 | ||
| 2 | int hsgn(double input, double thresh){
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| 3 | int ret; | |
| 4 | if(input > math.abs(thresh)) | |
| 5 | ret = 1; | |
| 6 | else if(input < math.abs(thresh)) | |
| 7 | ret = -1; | |
| 8 | else | |
| 9 | ret = 0; | |
| 10 | ||
| 11 | return ret; | |
| 12 | } | |
| 13 | ||
| 14 | zeroCrossCounter(double input, double thresh){
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| 15 | static int xzc; | |
| 16 | static int xc; | |
| 17 | ||
| 18 | int ysgn = hsgn(input, thresh); | |
| 19 | int xzcn = kzc(ysgn, xzc); | |
| 20 | xzc = xzcn; | |
| 21 | int yzc = hzc(ysgn, xzc); | |
| 22 | int xcn = kc(yzc, xc); | |
| 23 | xc = xcn; | |
| 24 | return 0; | |
| 25 | } |
