DSP++ extension

DSP++ is an entirely optional, header-only C++ extension to CMSIS-DSP.

Applications using only the C API are unaffected: no code or build changes are needed, and the extension adds no code size, memory or runtime overhead.

DSP++ is currently unsupported in builds with ARM_MATH_NEON enabled. On Cortex-A, enabling this macro to benefit from Neon in the C API also affects DSP++: its incomplete Neon implementation can cause compilation errors, with no automatic scalar fallback. Applications using only the C API can continue to use Neon normally.

The headers are included in the CMSIS-DSP pack starting with version 1.18.0 and are also available in the CMSIS-DSP GitHub repository. The extension itself requires no separate build: include the headers to use its C++ API with CMSIS-DSP.

• Introduction
• C++ template for C programmer
• Vector operation example
• Memory allocation
• Static / Dynamic objects
• Code size
• Fusion mechanism
• Vector operators
• Matrix operators
• Building and running examples
• Usage guidelines
• Complex numbers