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#440

This commit is contained in:
rusefi 2017-06-06 23:11:29 -04:00
parent 4bb0043e21
commit ff196f6557
2 changed files with 12 additions and 0 deletions
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11
firmware/controllers/core/interpolation.cpp
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@ -156,6 +156,17 @@ int findIndex2(const float array[], unsigned size, float value) {
return i || *array <= value ? i : -1; return i || *array <= value ? i : -1;
} }
/**
* in order to use binary search we need to know that axis elements are sorted
*/
void ensureArrayIsAscending(const char *msg, const float array[], int size) {
for (int i = 0; i < size - 1; i ++) {
if (array[i] >= array[i+ 1]) {
firmwareError(CUSTOM_ERR_6538, "invalid axis %s at %f", msg, array[i]);
}
}
}
/** @brief Binary search /** @brief Binary search
* @returns the highest index within sorted array such that array[i] is greater than or equal to the parameter * @returns the highest index within sorted array such that array[i] is greater than or equal to the parameter
* @note If the parameter is smaller than the first element of the array, -1 is returned. * @note If the parameter is smaller than the first element of the array, -1 is returned.

1
firmware/controllers/core/interpolation.h
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@ -22,6 +22,7 @@
int findIndex(const float array[], int size, float value); int findIndex(const float array[], int size, float value);
int findIndexMsg(const char *msg, const float array[], int size, float value); int findIndexMsg(const char *msg, const float array[], int size, float value);
void ensureArrayIsAscending(const char *msg, const float array[], int size);
int findIndex2(const float array[], unsigned size, float value); int findIndex2(const float array[], unsigned size, float value);
float interpolate(float x1, float y1, float x2, float y2, float x); float interpolate(float x1, float y1, float x2, float y2, float x);
float interpolateMsg(const char *msg, float x1, float y1, float x2, float y2, float x); float interpolateMsg(const char *msg, float x1, float y1, float x2, float y2, float x);