Module cufft 

Local FFI bindings for cuFFT entry points cudarc 0.19.4 doesn’t expose.

Specifically: cufftXtSetCallback / cufftXtClearCallback. These aren’t part of cudarc’s cufft::sys surface, so we resolve them ourselves via libloading against libcufft.so (Linux), cufft64_*.dll (Windows), or libcufft.dylib (macOS).

Why not extern "C"? cudarc’s default fallback-dynamic-loading build does not emit a -lcufft link directive — symbols are resolved at runtime through dlopen. Adding a hard extern "C" reference here would break the link on hosts without libcufft on the link path (which is the whole point of fallback-dynamic-loading). Mirroring cudarc’s strategy keeps us link-clean.

Enums

CufftXtCallbackType

cufftXtCallbackType from cufftXt.h.

Functions

xt_clear_callback^⚠

Clear a previously-installed callback.

xt_set_callback^⚠

Install a load/store callback on a cuFFT plan.