AcademySoftwareFoundation/Imath v3.1.0

on GitHub

Minor release with new significant features:

• Optimized half-to-float and float-to-half conversion, using F16C SSE instruction set if available. Non-SSE conversion eliminates the float-to-half exponent lookup table, and half-to-float conversion provides a compile-time-optional bit shifting algorithm that is slower but eliminates the need for the lookup table, for applications where memory is limited.

  Half-to-float and float-to-half conversion is also available as C-language functions imath_half_to_float() and imath_float_to_half().

  All new conversions produced identical results, and new options are off by default to ensure backwards compatibility. See https://imath.readthedocs.io for more info.

• noexcept specifier can be eliminated at compile-time via the IMATH_USE_NOEXCEPT CMake option.

• Python bindings:

  • FixedArray objects support a "read only" state.
  • FixedArray objects support python buffer protocol.

• Optimized 4x4 matrix multiplication.