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Mojo function

pmaddw

def pmaddw[width: SIMDLength](a: SIMD[DType.int32, width], b: SIMD[DType.int32, width]) -> SIMD[DType.int32, width]

Multiplies adjacent signed 16-bit integer pairs and adds the products, returning int32 results.

Parameters:

width (SIMDLength): Number of int32 output elements (4, 8, or 16).

Args:

a (SIMD[DType.int32, width]): Int32-typed SIMD vector reinterpreted as signed int16 pairs.
b (SIMD[DType.int32, width]): Int32-typed SIMD vector reinterpreted as signed int16 pairs.

Returns:

SIMD[DType.int32, width]