_comedilib_h: Add 'const' to functions returning const char* #5
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This fixes compiler warnings about discarded const qualifiers: pycomedi/_error.c:1353:22: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers] __pyx_v_comedi_msg = comedi_strerror(__pyx_v_errno); pycomedi/device.c:2605:15: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers] __pyx_v_ret = comedi_get_driver_name(__pyx_v_self->__pyx_base.device); pycomedi/device.c:2741:15: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers] __pyx_v_ret = comedi_get_board_name(__pyx_v_self->__pyx_base.device); Const is supported since Cython 0.18 (2013-01-28) [1]: C const declarations are supported in the language. [1]: https://github.com/cython/cython/blob/master/CHANGES.rst#018-2013-01-28
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This fixes compiler warnings about discarded const qualifiers:
pycomedi/_error.c:1353:22: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
__pyx_v_comedi_msg = comedi_strerror(__pyx_v_errno);
pycomedi/device.c:2605:15: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
__pyx_v_ret = comedi_get_driver_name(__pyx_v_self->__pyx_base.device);
pycomedi/device.c:2741:15: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
__pyx_v_ret = comedi_get_board_name(__pyx_v_self->__pyx_base.device);
Const is supported since Cython 0.18 (2013-01-28)
1:
C const declarations are supported in the language.