* test=develop,test=document_fix, remove the out args

* Revert "test=develop,test=document_fix, remove the out args"

This reverts commit f430799b.

* test=develop,test=document_fix, remove the out args

* remove all  the out args

* remove all  the out args

* test=develop, remove all  the out args

* test=develop, remove all  the out args

* test=develop, remove out args in matmul testcase

* test=develop, fix the bugs of out args testcase in logsumexp

* test=develop, fix the bugs of out args testcase in elementwise_add

* test=develop, fix the bugs of out args testcase in elementwise_div

* test=develop, fix the bugs of out args testcase in activation

* test=develop, fix the bugs of out args testcase in addcmul

* test=develop, fix the bugs of out args

* test=develop, fix the bugs of out args in API example

* test=develop, fix the bugs of out args in kron testcase

* test=develop, fix the bugs of out args in kron testcase

* test=develop, remove out args

* test=develop, remove out args

* test=develop, fix the coverage

* test=develop, polish codestyle

* test=develop, Update math.py

* test=develop, polish codestyle

* test=develop, polish codestyle

* test=develop, polish codestyle

* test=develop, polish codestyle

* test=develop, polish the test_activation_op.py

* test=develop, Update math.py

* test=develop, fix the failed CI

* test=develop, add core.ops

* test=develop, add core.ops change clamp to clip

* test=develop, add core.ops change clamp to clip

* test=develop, write testcase for clamp OP

* add approval

* add ci check for changing op-related api without core.ops, test=develop

* generate api_source_md5 file when build, test=develop

* add failed example, test=develop

* add failed example, test=develop

* handle exception, test=develop

* add add checker for seting parameter RUNTYPE to EXCLUSIVE or DIST. test=develop

* add checker for seting parameter RUNTYPE to EXCLUSIVE or DIST. test=develop

* add check for setting TIMEOUT properties, test=develop

* add check for setting TIMEOUT properties, or setting parameter RUN_TYPE to EXCLUSIVE or DIST,test=document_fix test=develop

* add check for setting TIMEOUT properties, or setting parameter RUN_TYPE to EXCLUSIVE or DIST,test=document_fix test=develop

* modify the github wiki link,test=document_fix test=develop

test=develop
test=document_fix

* use allow list instead of white list, test=develop

* reduce include, test=develop

* remove REPLACE_ENFORCE_GLOG compile option & add ci rule prohibit LOG(FATAL) using, test=develop

* remove ci test case, test=develop

* replace all LOG(FATAL) & polish message, test=develop

* fix typo, test=develop

* polish error info detail, test=develop

* Add pr checker for ut

test=develop

* Change approvers for ut spec checking

test=document_fix

* Change approvers for ut spec checking

test=develop
test=document_fix

* Add comments

test=develop
test=document_fix

* Refine error message

test=develop
test=document_fix

* add new macro BOOST_GET_SAFELY & unittests, test=develop

* add different macro type, test=develop

* fix get macro type in executor, test=develop

* four macro part change backup

* using one macro for all case, test=develop

* revert attribute change, test=develop

* change to three func to solve gcc4.8 bug, test=develop

* polish some details, test=develop

* Optimize the error messages of paddle CUDA API, test=develop

* fix the error messages of paddle CUDA API, test=develop

* Refactoring PADDLE_ENFORCE_CUDA_SUCCESS, and apply to curand/cudnn/cublas/NCCL,test=develop

* remove build_ex_string,test=develop

* merge conflict,test=develop

* reproduce match error, test=develop, test=document_fix

* fix mismatch error, test=develop, test=document_fix

* add no_grad_set value check in op_test, test=develop

* update ops list, test=develop

* polish grad op check, test=develop, test=document_fix

* keep op_use_default_grad_maker.spec to avoid conflict, test=develop, test=document_fix

* add ci approvals for dygraph optest, test=develop

* Add error message, test=develop, test=document_fix

* Increase the number of approves of CI check for dygraph optest, test=develop, test=document_fix

* add ci approvals for dygraph optest, test=develop

* polish code style, test=develop, test=document_fix

* remove ci-check trigger example, test=develop, test=document_fix

* add is_empty_grad_op for OpTest, test=develop

* add ci check in check_api_approvals.sh, test=develop

* fix typo and refine error information test=document_fix, test=develop

* fix typo test=document_fix test=develop

* fix bug test=document_fix test=develop