Convenience and Correctness

Users can include a single header file sdlt.h that includes all the supported public features, or users can include the individual headers of features they will be using (which might build faster). In other words,

#include <sdlt/sdlt.h>

instead of

#include <sdlt/primitive.h>
#include <sdlt/soa1d_container.h>

For convenience, SDLT provides a macro to encapsulate #pragma forceinline recursive.

SDLT_INLINE_BLOCK

SDLT reduces overhead by trusting the programmer to pass it valid values for template and function parameters. Adding conditional checks inside of a SIMD loop can cause unnecessary code generation and inhibit vectorization by creating multiple exit points in a loop. To assist in verifying that a program is indeed passing valid values to SDLT, the programmer can add a compilation flag to their build to define SDLT_DEBUG=1.

-DSDLT_DEBUG=1

If _DEBUG is defined and SDLT_DEBUG has not been defined to 0 or 1, then SDLT_DEBUG is automatically set to 1. When set to 1, every operator[] is bounds checked and all addresses are validated for correct alignment. It is very useful for tracking down any usage bugs.

The macro __SDLT_VERSION is predefined to be 2001. Programs could use it for conditional compilation if incompatibilities arise in future updates.

C++ implementations of std::min and std::max sometimes have a negative impact on performance. SDLT defines min_val and max_val that help avoid such performance penalties.

Para obtener información más completa sobre las optimizaciones del compilador, consulte nuestro Aviso de optimización.