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J64 Available |
initial writing: 2004-08-18 |
J64, the 64 bit version of J, is now available.
- Address space is 64 bits (1.84e19 bytes) instead of 32 bits (4.29e9 bytes).
- Integers are 64 bits instead of 32 bits.
- As before, integer comparisons are exact (not tolerant).
- The default memory limit (Edit|Configure|Parameters... or 9!:20 and 9!:21) is 2^62 instead of 2^30 .
- 3&(3!:4) converts integers to sets of 8 characters; _3&(3!:4) computes the inverse.