diff options
author | lianah <lianahady@gmail.com> | 2012-12-12 17:26:18 -0500 |
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committer | lianah <lianahady@gmail.com> | 2012-12-12 17:26:18 -0500 |
commit | 751950b3ca631ed92e1af35a290642fe7b7cc0bb (patch) | |
tree | 20bfe0a785d7bebba60b2bb0572e890d95243d87 /src/util/bitvector.h | |
parent | 0e3dc441641c64e6137d85f8d7eaeb78ee562e51 (diff) |
* fixed bug 481 by adding check for division by 0 in bit-vector division circuit
* added printing for total bit-vector division kinds for debugging purposes
Diffstat (limited to 'src/util/bitvector.h')
-rw-r--r-- | src/util/bitvector.h | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/src/util/bitvector.h b/src/util/bitvector.h index 2c178ec2e..4cbcba50e 100644 --- a/src/util/bitvector.h +++ b/src/util/bitvector.h @@ -178,23 +178,25 @@ public: Integer prod = d_value * y.d_value; return BitVector(d_size, prod); } - - BitVector unsignedDiv (const BitVector& y) const { + /** + * Total division function that returns 0 when the denominator is 0. + */ + BitVector unsignedDivTotal (const BitVector& y) const { CheckArgument(d_size == y.d_size, y); - // TODO: decide whether we really want these semantics if (y.d_value == 0) { - return BitVector(d_size, Integer(0)); + return BitVector(d_size, 0u); } CheckArgument(d_value >= 0, this); CheckArgument(y.d_value > 0, y); return BitVector(d_size, d_value.floorDivideQuotient(y.d_value)); } - - BitVector unsignedRem(const BitVector& y) const { + /** + * Total division function that returns 0 when the denominator is 0. + */ + BitVector unsignedRemTotal(const BitVector& y) const { CheckArgument(d_size == y.d_size, y); - // TODO: decide whether we really want these semantics if (y.d_value == 0) { - return BitVector(d_size, d_value); + return BitVector(d_size, 0u); } CheckArgument(d_value >= 0, this); CheckArgument(y.d_value > 0, y); |