test_p
test_p(func, z, result, exceptmask, excepts, checksign); \
test_p(func, conjl(z), conjl(result), exceptmask, excepts, checksign); \
test_p(func, z, result, exceptmask, excepts, checksign); \
test_p(func, conjl(z), conjl(result), exceptmask, excepts, checksign); \