Re: gawk number to string bug

[David Ellsworth]

Since you are taking my bug report seriously (which is really great),
let me add some more fuel to the fire.  Consider this program:

BEGIN { x=2**60; for(i=60;i<=65;i++) { printf "2^%d= %s %d %g\n",i,x,x,x; x*=2}}

which prints out powers of two around 2^63.  On an Opteron (as well as
an Itanium), you get

2^60= 1152921504606846976 1152921504606846976 1.15292e+18
2^61= 2305843009213693952 2305843009213693952 2.30584e+18
2^62= 4611686018427387904 4611686018427387904 4.61169e+18
2^63= -9223372036854775808 9223372036854775808 9.22337e+18
2^64= 1.84467e+19 0 1.84467e+19
2^65= 3.68935e+19 3.68935e+19 3.68935e+19

On a Xeon, you get

2^60= 1.15292e+18 1152921504606846976 1.15292e+18
2^61= 2.30584e+18 2305843009213693952 2.30584e+18
2^62= 4.61169e+18 4611686018427387904 4.61169e+18
2^63= 9.22337e+18 9223372036854775808 9.22337e+18
2^64= 1.84467e+19 0 1.84467e+19
2^65= 3.68935e+19 3.68935e+19 3.68935e+19

The 2^64 value for %d is probably also a bug since the outputs
for 2^63 and 2^65 are reasonable.

- David