ref: b04ed2ae522a0d2f97d8ac7e5f3276223112ebe8
dir: /sys/src/libmp/port/dat.h/
#define mpdighi (mpdigit)(1<<(Dbits-1)) #define DIGITS(x) ((Dbits - 1 + (x))/Dbits) // for converting between int's and mpint's #define MAXUINT ((uint)-1) #define MAXINT (MAXUINT>>1) #define MININT (MAXINT+1) // for converting between vlongs's and mpint's #define MAXUVLONG (~0ULL) #define MAXVLONG (MAXUVLONG>>1) #define MINVLONG (MAXVLONG+1ULL)