v3.1.2

Patch release that fixes a Windows header issue.

[#190] Improve handling of #include <*intrin.h>

v3.1.1

Patch release that fixes a build failure on ARM64 macOS

• [#184] Include <x86intrin.h> only if __x86_64__

v3.1.0

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.

v3.0.5

Patch release that fixes problems with library symlinks and pkg-config. Otherwise, no code changes.

• #172 Use CMAKE_INSTALL_FULL_LIBDIR/INCLUDEDIR for pkgconfig
• #166 Fix non-versioned library symlinks in debug build.
• #165 Use CMAKE__POSTFIX for .pc file lib suffix.

v3.0.4

Patch release that corrects a problem with the release version number of v3.0.2.

v3.0.2

Patch release with miscellaneous bug/build fixes, primarily:

• #140 Fix regression in succf()/predf()
• #137 Don't impose C++14 on downstream projects

v3.0.1

First release of Imath 3.0.

See the porting guide for details about differences from previous releases.

Summary:

• Imath includes the half type, formerly in a separate Half library.
• Headers are installed in Imath/ subdirectory.
• All appropriate methods are marked constexpr, noexcept
• Appropriate declarations include CUDA __host__ and __device__ directives.
• Throwing methods throw std exceptions instead of Iex.
• New Vec and Matrix interoperability constructors for conversion from other similar type objects.
• Symbol linkage visibility is limited to specific public symbols.
• Python bindings are off by default, available by setting PYTHON=ON.
• Deprecated features:
  • std::numeric_limits replaces Imath::limits.
  • Int64 and SInt64 are deprecated in favor of uint64_t and int64_t.

Read library documentation at: https://imath.readthedocs.io

v3.0.1-beta

Beta patch release:

#131 #if IMATH_FOREIGN_VECTOR_INTEROP around type detectors
#130 Forward declarations only if header is not included

v3.0.0-beta

Beta: First release of Imath independent of OpenEXR.

See the porting guide for details about differences from previous releases.

Summary:

• Imath includes the half type, formerly in a separate Half library.
• Headers are installed in Imath/ subdirectory.
• All appropriate methods are marked constexpr, noexcept
• Appropriate declarations include CUDA __host__ and __device__ directives.
• Throwing methods throw std exceptions instead of Iex.
• New Vec and Matrix interoperability constructors for conversion from other similar type objects.
• Symbol linkage visibility is limited to specific public symbols.
• Python bindings are off by default, available by setting PYTHON=ON.
• Deprecated features:
  • std::numeric_limits replaces Imath::limits.
  • Int64 and SInt64 are deprecated in favor of uint64_t and int64_t.

Read library documentation at: https://imath.readthedocs.io