Function arm_convolve_s8_get_buffer_size

Function Documentation

int32_t arm_convolve_s8_get_buffer_size(const cmsis_nn_dims *input_dims, const cmsis_nn_dims *filter_dims)

Get the required buffer size for s8 convolution function.

The dimensions are checked here, so a negative dimension returns -1 on every build target. The byte count is range-checked inside the selected leg instead, because the Helium and non-Helium legs use different formulas, so a shape whose dimension product overflows is only reported by the leg that actually computes a buffer for it.

Parameters:

  • input_dims – [in] Input (activation) tensor dimensions. Format: [N, H, W, C_IN]

  • filter_dims – [in] Filter tensor dimensions. Format: [C_OUT, HK, WK, C_IN] where HK and WK are the spatial filter dimensions

Returns:

The function returns required buffer size in bytes, or -1 if any dimension it reads is negative or the required size would not fit in an int32_t