diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | bignum.c | 5 |
2 files changed, 6 insertions, 4 deletions
@@ -1,3 +1,8 @@ +Sun Sep 1 13:02:24 2013 Tanaka Akira <akr@fsij.org> + + * bignum.c: Remove BITSPERDIG >= INT_MAX test. The static assertion, + SIZEOF_BDIGITS <= sizeof(BDIGIT) is enough. + Sun Sep 1 11:38:26 2013 Tanaka Akira <akr@fsij.org> * bignum.c (maxpow_in_bdigit): Removed. @@ -64,7 +64,7 @@ STATIC_ASSERT(sizeof_long_and_sizeof_bdigit, SIZEOF_BDIGITS % SIZEOF_LONG == 0); # define HOST_BIGENDIAN_P 0 #endif #define ALIGNOF(type) ((int)offsetof(struct { char f1; type f2; }, f2)) -/* (sizeof(d) * CHAR_BIT <= (n) ? 0 : (n)) is same as n but suppress a warning, C4293, by Visual Studio. */ +/* (!LSHIFTABLE(d, n) ? 0 : (n)) is same as n but suppress a warning, C4293, by Visual Studio. */ #define LSHIFTABLE(d, n) ((n) < sizeof(d) * CHAR_BIT) #define LSHIFTX(d, n) (!LSHIFTABLE(d, n) ? 0 : ((d) << (!LSHIFTABLE(d, n) ? 0 : (n)))) #define CLEAR_LOWBITS(d, numbits) ((d) & LSHIFTX(~((d)*0), (numbits))) @@ -73,9 +73,6 @@ STATIC_ASSERT(sizeof_long_and_sizeof_bdigit, SIZEOF_BDIGITS % SIZEOF_LONG == 0); #define BDIGITS(x) (RBIGNUM_DIGITS(x)) #define BITSPERDIG (SIZEOF_BDIGITS*CHAR_BIT) -#if BITSPERDIG >= INT_MAX -# error incredible BDIGIT -#endif #define BIGRAD ((BDIGIT_DBL)1 << BITSPERDIG) #define BIGRAD_HALF ((BDIGIT)(BIGRAD >> 1)) #define BDIGIT_MSB(d) (((d) & BIGRAD_HALF) != 0) |