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Fix signed compare with minus values 

If the operands were negative, and not equal, the lt flag
would be set incorrectly.

Signed-off-by: Stephen Williams <steve@icarus.com>
This commit is contained in:
Stephen Williams 2007-07-02 21:33:05 -07:00
parent 018f1a6e7f
commit e75e7131ac
1 changed files with 3 additions and 3 deletions
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6
vvp/vthread.cc
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@ -868,9 +868,9 @@ bool of_CMPS(vthread_t thr, vvp_code_t cp)
/* Correct the lt bit to account for the sign of the parameters. */ /* Correct the lt bit to account for the sign of the parameters. */
if (lt != BIT4_X) { if (lt != BIT4_X) {
/* If both numbers are negative, then switch the /* If both numbers are negative (and not equal) then
direction of the lt. */ switch the direction of the lt. */
if ((sig1 == BIT4_1) && (sig2 == BIT4_1) && (eq != BIT4_0)) if ((sig1 == BIT4_1) && (sig2 == BIT4_1) && (eq != BIT4_1))
lt = ~lt; lt = ~lt;
/* If the first is negative and the last positive, then /* If the first is negative and the last positive, then