Here is a list of all documented macros with links to the documentation:

A

C

D

E

G

I

M

O

P

S

U

V

W

- u -

• USGS_ANGLE_DECIMALDEGREES : ogr_spatialref.h
• USGS_ANGLE_PACKEDDMS : ogr_spatialref.h
• USGS_ANGLE_RADIANS : ogr_spatialref.h