Help / Release / J 6.02 / 4$.y and 5$.y Improved
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4$.y and 5$.y Improved |
initial writing: 2007-01-29 |
4$.5 and 5$.y have been made more efficient in time and space. The following benchmarks demonstrate the improvements:
sx=: $. (1e5 10 ?@$ 2) * (1e5 10 ?@$ 0) ts=: 6!:2 , 7!:2@] NB. time and space ts 'Expression'
| Expression | J 6.02 | J 6.01 | Ratio | |||||||||
| 4$.sx | 0.0000021 | 7.04000e2 | 0.0068610 | 4.19501e6 | 3214.96 | 5958.82 | ||||||
| 5$.sx | 0.0000019 | 7.04000e2 | 0.0068179 | 4.19501e6 | 3509.02 | 5958.82 | ||||||