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Update commentary.

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From-SVN: r63484
This commit is contained in:
Richard Henderson 2003-02-26 13:07:40 -08:00
parent 49b973cbaf
commit eeec05e1db
1 changed files with 8 additions and 0 deletions
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8
gcc/real.c
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@ -1311,6 +1311,10 @@ real_to_integer (r)
case rvc_normal:
if (r->exp <= 0)
goto underflow;
/* Only force overflow for unsigned overflow. Signed overflow is
undefined, so it doesn't matter what we return, and some callers
expect to be able to use this routine for both signed and
unsigned conversions. */
if (r->exp > HOST_BITS_PER_WIDE_INT)
goto overflow;
@ -1371,6 +1375,10 @@ real_to_integer2 (plow, phigh, r)
exp = r->exp;
if (exp <= 0)
goto underflow;
/* Only force overflow for unsigned overflow. Signed overflow is
undefined, so it doesn't matter what we return, and some callers
expect to be able to use this routine for both signed and
unsigned conversions. */
if (exp > 2*HOST_BITS_PER_WIDE_INT)
goto overflow;