Emscripten failed to compile: floating-point exceptions macro are not defined

[Pixelblender]

Hi,

Thank you for this awesome library. It works on desktop but unfortunately emscripten can't compile it.

Macros such as FE_INEXACT and FE_INVALID are not defined. According to emscripten release 1.39.15: 05/06/2020:
Stop defining FE_INEXACT and other floating point exception macros in libc, since we don't support them. That also prevents musl from including code using pragmas that don't make sense for wasm. Ifdef out other uses of those pragmas as well, as tip of tree LLVM now fails to compile them on wasm.

more on the release note is in here: https://emscripten.org/docs/introducing_emscripten/release_notes.html

Best regards,

[Christian Rau]

Hello,

In this case it seems you need to manually undefine support for the <cfenv>
header. This is normally enabled automatically based on the
compiler/library version used. But if you say your environment is
explicitly unsupporting the standard there, then you can manually
deactivate support for these macros by defining the HALF_ENABLE_CPP11_CFENF
macro to 0 (either via compiler/preprocessor options or in code before
including half.hpp), as described in the documentation on
half.sourceforge.net. This will cause the library to define the FE_ macros
itself.</cfenv>

Regards,
Christian Rau

Am So., 17. Okt. 2021 um 00:35 Uhr schrieb Pixelblender pixelblender3d@users.sourceforge.net:

Hi,

Thank you for this awesome library. It works on desktop but unfortunately
emscripten can't compile it.

Macros such as FE_INEXACT and FE_INVALID are not defined. According to
emscripten release 1.39.15: 05/06/2020:
Stop defining FE_INEXACT and other floating point exception macros in
libc, since we don't support them. That also prevents musl from including
code using pragmas that don't make sense for wasm. Ifdef out other uses of
those pragmas as well, as tip of tree LLVM now fails to compile them on
wasm.

more on the release note is in here:
https://emscripten.org/docs/introducing_emscripten/release_notes.html

Best regards,

---

Emscripten failed to compile: floating-point exceptions macro are not
defined

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[Pixelblender]

Hi,

Defining HALF_ENABLE_CPP11_CFENV=0 fix the issue. Thank you so much and keep up the good work!

Cheers!