Add WORD_MSBIT_HIGH define - machine_int_t with the highest bit set.

2014-01-12 16:15:47 +02:00 · 2014-01-12 16:15:47 +02:00 · c260bc58e6
parent fc5aac82cb
commit c260bc58e6
1 changed files with 2 additions and 0 deletions
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@ -78,6 +78,8 @@

 #define BITS_PER_BYTE (8)
 #define BITS_PER_WORD (BITS_PER_BYTE * BYTES_PER_WORD)
+// machine_int_t value with most significant bit set
+#define WORD_MSBIT_HIGH (1 << (BYTES_PER_WORD * 8 - 1))

 // printf format spec to use for machine_int_t and friends
 #ifndef INT_FMT