ref: 61373d868f00d66fa2d00b35d05d52c6b2983f05
dir: /sys/src/cmd/aux/gps/dat.h/
typedef struct Place Place; struct Place { double lon; double lat; }; #pragma varargck type "L" Place enum { Undef = 0x80000000, Baud= 4800, /* 4800 is NMEA standard speed */ }; extern Place nowhere; extern int debug; int placeconv(Fmt*); Place strtopos(char*, char**); int strtolatlon(char*, char**, Place*);