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Pullrequest pprz math array operations (#2160)

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* [pprz_algebra_int.h] Added functions to cast a value and to find a value in an array
* [pprz_algebra_int.h] updated function name and description
* improved comment for find function
This commit is contained in:
Mario Coppola
2017-11-06 21:31:48 +01:00
committed by Kirk Scheper
parent e84ff368c2
commit c541198bd5
1 changed files with 24 additions and 0 deletions
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sw/airborne/math/pprz_algebra_int.h
+24
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@@ -608,6 +608,14 @@ static inline void int32_vect_zero(int32_t *a, const int n)
for (i = 0; i < n; i++) { a[i] = 0.; }
}
/** a = v * ones(n,1) */
static inline void int32_vect_set_value(int32_t *a, const int32_t v, const int n)
{
int i;
for(i = 0 ; i < n; i++) { a[i] = v; }
}
/** a = b */
static inline void int32_vect_copy(int32_t *a, const int32_t *b, const int n)
{
@@ -657,6 +665,22 @@ static inline void int32_vect_smul(int32_t *o, const int32_t *a, const int32_t s
for (i = 0; i < n; i++) { o[i] = a[i] * s; }
}
/** Find value s in array a. Returns 1 if found, 0 if not found.
* If the value is found loc = index of found value in array, else loc = -1
*/
static inline bool int32_vect_find(const int32_t *a, const int32_t s, int *loc, const int n)
{
int i;
for (i = 0; i < n; i++) {
if (a[i] == s) {
*loc = i;
return true;
}
}
*loc = -1;
return false;
}
//
//
// Generic matrix algebra