Add proj_degree_input() and proj_degree_output()

Equivalent to proj_angular_input() and proj_angular_output() but
checking for degree units instead. proj_create_crs_to_crs() rarely, if
ever, returns pipelines that has radians as input or output so using
proj_angular_*() is not a useful check for io units of pipelines.

These two new functions should make life a bit easier for users that
generally store there angular coordinates in radians.

Closes #2027

1 files changed, 2 insertions, 0 deletions

diff --git a/src/proj.h b/src/proj.h
index d2464d69..857fb862 100644
--- a/src/proj.h
+++ b/src/proj.h
@@ -567,6 +567,8 @@ typedef enum PJ_DIRECTION PJ_DIRECTION;
 int PROJ_DLL proj_angular_input (PJ *P, enum PJ_DIRECTION dir);
 int PROJ_DLL proj_angular_output (PJ *P, enum PJ_DIRECTION dir);
 
+int PROJ_DLL proj_degree_input (PJ *P, enum PJ_DIRECTION dir);
+int PROJ_DLL proj_degree_output (PJ *P, enum PJ_DIRECTION dir);
 
 PJ_COORD PROJ_DLL proj_trans (PJ *P, PJ_DIRECTION direction, PJ_COORD coord);
 int PROJ_DLL proj_trans_array (PJ *P, PJ_DIRECTION direction, size_t n, PJ_COORD *coord);