Make nn_dot_product function arguments fixed array (#14)

include/arch/arm/cmsis-dsp/nn_dot_product.h

@@ -3,7 +3,12 @@
 
 #include <stddef.h>
 
-// nn_dot_product_neon calculates the dot product of two vectors.
-float nn_dot_product_cmsis(const float *a, const float *b, size_t length);
+// NN_DOT_PRODUCT_MAX_VECTOR_SIZE defines the maximum size of a vector.
+#ifndef NN_DOT_PRODUCT_MAX_VECTOR_SIZE
+#define NN_DOT_PRODUCT_MAX_VECTOR_SIZE 64
+#endif
+
+// nn_dot_product_cmsis calculates the dot product of two vectors.
+float nn_dot_product_cmsis(const float a[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], const float b[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], size_t vector_size);
 
 #endif // NN_DOT_PRODUCT_CMSIS_H

include/arch/arm/neon/nn_dot_product.h

@@ -3,7 +3,12 @@
 
 #include <stddef.h>
 
+// NN_DOT_PRODUCT_MAX_VECTOR_SIZE defines the maximum size of a vector.
+#ifndef NN_DOT_PRODUCT_MAX_VECTOR_SIZE
+#define NN_DOT_PRODUCT_MAX_VECTOR_SIZE 64
+#endif
+
 // nn_dot_product_neon calculates the dot product of two vectors.
-float nn_dot_product_neon(const float *a, const float *b, size_t length);
+float nn_dot_product_neon(const float a[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], const float b[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], size_t vector_size);
 
 #endif // NN_DOT_PRODUCT_NEON_H

include/nn_dot_product.h

@@ -1,13 +1,17 @@
 #ifndef NN_DOT_PRODUCT_H
 #define NN_DOT_PRODUCT_H
 
-#include "nn_error.h"
 #include <stddef.h>
 
+// NN_DOT_PRODUCT_MAX_VECTOR_SIZE defines the maximum size of a vector.
+#ifndef NN_DOT_PRODUCT_MAX_VECTOR_SIZE
+#define NN_DOT_PRODUCT_MAX_VECTOR_SIZE 64
+#endif
+
 // NNDotProductFunction represents a function that calculates the dot product of two vectors.
-typedef float (*NNDotProductFunction)(const float *a, const float *b, size_t length);
+typedef float (*NNDotProductFunction)(const float a[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], const float b[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], size_t vector_size);
 
 // nn_dot_product calculates the dot product of two vectors.
-float nn_dot_product(const float *a, const float *b, size_t length);
+float nn_dot_product(const float a[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], const float b[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], size_t vector_size);
 
 #endif // NN_DOT_PRODUCT_H

src/arch/arm/cmsis-dsp/nn_dot_product.c

@@ -4,7 +4,7 @@
 #include <stddef.h>
 
 // nn_dot_product_neon calculates the dot product of two vectors.
-float nn_dot_product_cmsis(const float *a, const float *b, size_t vector_size) {
+float nn_dot_product_cmsis(const float a[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], const float b[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], size_t vector_size) {
     NN_DEBUG_PRINT(5, "function %s called with vector_size = %zu\n", __func__, vector_size);
 
     float result = 0.0f;

src/arch/arm/neon/nn_dot_product.c

@@ -4,7 +4,7 @@
 #include <stddef.h>
 
 // nn_dot_product_neon calculates the dot product of two vectors.
-float nn_dot_product_neon(const float *a, const float *b, size_t vector_size) {
+float nn_dot_product_neon(const float a[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], const float b[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], size_t vector_size) {
     NN_DEBUG_PRINT(5, "function %s called with vector_size = %zu\n", __func__, vector_size);
 
     // Initialize vector sum to 0

src/nn_dot_product.c

@@ -1,8 +1,9 @@
+#include "nn_dot_product.h"
 #include "nn_debug.h"
 #include <stddef.h>
 
 // nn_dot_product_neon calculates the dot product of two vectors.
-float nn_dot_product(const float *a, const float *b, size_t vector_size) {
+float nn_dot_product(const float a[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], const float b[NN_DOT_PRODUCT_MAX_VECTOR_SIZE], size_t vector_size) {
     NN_DEBUG_PRINT(5, "function %s called with vector_size = %zu\n", __func__, vector_size);
 
     // Initialize vector sum to 0