diff options
Diffstat (limited to 'arm_compute/core/Helpers.h')
| -rw-r--r-- | arm_compute/core/Helpers.h | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/arm_compute/core/Helpers.h b/arm_compute/core/Helpers.h index 48ac38b170..90dd6082e1 100644 --- a/arm_compute/core/Helpers.h +++ b/arm_compute/core/Helpers.h @@ -801,16 +801,6 @@ inline T wrap_around(T x, T m) return x >= 0 ? x % m : (x % m + m) % m; } -/** Convert a dimension axis to the number of dimensions in the range [0, @p dim_axis] - * Handle negative axis, negative axis is used to specify axis from the end (e.g. -1 for the last axis). - * - * @param[in] dim_axis The last axis (inclusive) in the range [0, @p dim_axis] - * @param[in] num_dims The total number of dimensions - * - * @return The number of dimensions in the range [0, @p dim_axis] - */ -inline size_t dim_index_2_num_dims(int32_t dim_axis, int32_t num_dims); - /** Convert negative coordinates to positive in the range [0, num_dims_input] * * @param[out] coords Array of coordinates to be converted. @@ -852,6 +842,21 @@ inline unsigned int get_next_power_two(unsigned int x) return x; } + +/** Given a softmax axis, this function returns the permutation vector required to put the axis to the front + * + * @note This function assumes a tensor rank <= 4 + * + * Axis selects the dimension on which softmax is performed. + * E.g. For input of shape 4x5x6 and axis=1, softmax will be applied to 4x6=24 vectors of size 5. + * Interally softmax kernels is always performed on the first dimension (front dimension), therefore permutation is + * required to put the dimension specified by @p axis to the first dimension. + * + * @param[in] axis Axis on which to perform softmax. Supported: 1, 2, 3 (0 implies no permutation needed) + * + * @return the permutation vector + */ +PermutationVector get_permutation_vector_from_softmax_axis(size_t axis); } // namespace arm_compute #include "arm_compute/core/Helpers.inl" |