Build

Bugfix in uni5_for.c and in test #98

Job	Run time
build (ubuntu-latest, Release, gcc, g++)	39s
build (ubuntu-latest, Release, gcc, clang++)	42s
build (ubuntu-latest, Release, clang, g++)	40s
build (ubuntu-latest, Release, clang, clang++)	44s
build (ubuntu-latest, Debug, gcc, g++)	13s
build (ubuntu-latest, Debug, gcc, clang++)	19s
build (ubuntu-latest, Debug, clang, g++)	15s
build (ubuntu-latest, Debug, clang, clang++)	18s
build (macos-latest, Release, gcc, g++)	27s
build (macos-latest, Release, gcc, clang++)	35s
build (macos-latest, Release, clang, g++)	29s
build (macos-latest, Release, clang, clang++)	26s
build (macos-latest, Debug, gcc, g++)	17s
build (macos-latest, Debug, gcc, clang++)	17s
build (macos-latest, Debug, clang, g++)	16s
build (macos-latest, Debug, clang, clang++)	19s
build (windows-latest, Release, gcc, g++)	1m 43s
build (windows-latest, Release, gcc, clang++)	1m 35s
build (windows-latest, Release, clang, g++)	1m 36s
build (windows-latest, Release, clang, clang++)	1m 8s
build (windows-latest, Debug, gcc, g++)	1m 10s
build (windows-latest, Debug, gcc, clang++)	1m 2s
build (windows-latest, Debug, clang, g++)	1m 12s
build (windows-latest, Debug, clang, clang++)	35s
	16m 57s

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