diff options
| -rw-r--r-- | rand.c | 6 |
1 files changed, 3 insertions, 3 deletions
@@ -366,12 +366,12 @@ val random(val state, val modulus) if (m == 1) { return zero; } else if (m > 1) { - int bits = highest_bit(m - 1); + unsigned bits = highest_bit(m - 1); #if CHAR_BIT * SIZEOF_PTR >= 64 ucnum rands_needed = (bits + 32 - 1) / 32; #endif - ucnum msb_rand_bits = bits % 32; - rand32_t msb_rand_mask = convert(rand32_t, -1) >> (32 - msb_rand_bits); + ucnum msb_rand_bit_shift = (- bits) % 32; + rand32_t msb_rand_mask = convert(rand32_t, -1) >> msb_rand_bit_shift; for (;;) { cnum out = 0; #if CHAR_BIT * SIZEOF_PTR >= 64 |