Better primitive support for floats

Question

Clojure offers optimized arithmetic functions for long, int and doubles but none for floats.
Plus converting from integers (ints or longs) to floating point numbers (float or double) doesn't use the specialized bytecode.
This patch adds float-add/subtract/multiply/divide and more efficient coversion from integers to floating points numbers.

Answer 1

Comment made by: alexmiller

I think it's unlikely the arithmetic float ops will be accepted.
However, the intrinsics changes could be useful - could you split those into a new ticket?

Answer 2

Comment made by: cgrand

I attached a new patch with only intrinsics and more comprehensive primitive coercion. Is it the split you expected?

Answer 3

Comment made by: alexmiller

No, but totally my fault for saying the wrong words. :)

I think the changes in Compiler to get access to I2D, L2D, I2F, and L2F are potentially useful (most particularly L2D) - these would make sense in a new ticket.

The other changes in Intrinsics and Numbers to support float math are unlikely to be accepted.

Answer 4

Comment made by: cgrand

Godd thing I had already split coercions in a sparate commit then ;-)

See http://dev.clojure.org/jira/browse/CLJ-1340

Answer 5

Reference: https://clojure.atlassian.net/browse/CLJ-1266 (reported by cgrand)