send excpetions from get_softcal_converter and get_hardcal_converter

this allows to catch them from _get_converter()

diff --git a/pycomedi/channel.pyx b/pycomedi/channel.pyx
index 41cdbd31ea7a4eafd9824273e77c7f1f8b279a11..b71129f0d7bd7cf05e097cc7902f0d3591b710e9 100644 (file)
--- a/pycomedi/channel.pyx
+++ b/pycomedi/channel.pyx
@@ -384,7 +384,7 @@ cdef class AnalogChannel (Channel):
 
 
     cdef _comedilib_h.comedi_polynomial_t get_softcal_converter(
-        self, direction, _Calibration calibration):
+        self, direction, _Calibration calibration) except *:
         """
 
         `direction` should be a value from `constant.CONVERSION_DIRECTION`.
@@ -401,7 +401,7 @@ cdef class AnalogChannel (Channel):
         return poly
 
     cdef _comedilib_h.comedi_polynomial_t get_hardcal_converter(
-        self, direction):
+        self, direction) except *:
         """
 
         `direction` should be a value from `constant.CONVERSION_DIRECTION`.