Restore default floating point state after calling Java * bootstrap.conf (gnulib_modules): Add fpucw gnulib module. * configure.ac: Check for fpu_control.h. * libinterp/octave-value/ov-java.cc (restore_fpu_state): New function. (terminate_jvm, compute_array_dimensions, get_array_elements, set_array_elements, get_invoke_list, convert_to_string, box_more, java_event_hook, initialize_java, octave_java::do_javaMethod, octave_java::do_javaObject, octave_java::do_java_get, octave_java::do_java_set): Use it.

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