diff options
Diffstat (limited to 'bignum.c')
| -rw-r--r-- | bignum.c | 17 |
1 files changed, 7 insertions, 10 deletions
@@ -20,7 +20,7 @@ typedef unsigned short USHORT; #define BIGRAD (1L << BITSPERDIG) #define DIGSPERINT ((unsigned int)(sizeof(long)/sizeof(short))) #define BIGUP(x) ((unsigned long)(x) << BITSPERDIG) -#define BIGDN(x) (((x)<0) ? ~((~(x))>>BITSPERDIG) : (x)>>BITSPERDIG) +#define BIGDN(x) RSHIFT(x,BITSPERDIG) #define BIGLO(x) ((USHORT)((x) & (BIGRAD-1))) static VALUE @@ -1255,20 +1255,17 @@ rb_big_abs(x) */ VALUE -rb_big_rand(max) +rb_big_rand(max, rand) VALUE max; + double rand; { - struct RBignum *v; + VALUE v; long len; - len = RBIGNUM(max)->len; - v = RBIGNUM(bignew(len,1)); + len = RBIGNUM(v)->len; + v = bignew(len,1); while (len--) { -#ifdef HAVE_RANDOM - BDIGITS(v)[len] = random(); -#else - BDIGITS(v)[len] = rand(); -#endif + BDIGITS(v)[len] = ((USHORT)~0) * rand; } return rb_big_mod((VALUE)v, max); |