## Outdated egg!

This is an egg for CHICKEN 3, the unsupported old release. You're almost certainly looking for the CHICKEN 4 version of this egg, if it exists.

If it does not exist, there may be equivalent functionality provided by another egg; have a look at the egg index. Otherwise, please consider porting this egg to the current version of CHICKEN.

## srfi-4-comprehensions

SRFI-42 Comprehensions for SRFI-4 Vectors

The `srfi-4-comprehensions` extension defines comprehensions and generators (in the sense of `http://srfi.schemers.org/srfi-42|SRFI-42` for the homogeneous numeric vectors of `http://srfi.schemers.org/srfi-4|SRFI-4`.

The syntax of these generators and comprehensions follows exactly the syntax of the `vector-ec`, `vector-of-length-ec`, and `:vector` comprehensions and generator. Include in your module using

(require-extension syntax-case srfi-42 srfi-4-comprehensions) (import srfi-4-comprehensions)

The following comprehensions are provided:

(s8vector-ec <qualifier>* <expression>) (u8vector-ec <qualifier>* <expression>) (s16vector-ec <qualifier>* <expression>) (u16vector-ec <qualifier>* <expression>) (s32vector-ec <qualifier>* <expression>) (u32vector-ec <qualifier>* <expression>) (s64vector-ec <qualifier>* <expression>) (u64vector-ec <qualifier>* <expression>) (f64vector-ec <qualifier>* <expression>) (f32vector-ec <qualifier>* <expression>)

(s8vector-of-length-ec <k> <qualifier>* <expression>) (u8vector-of-length-ec <k> <qualifier>* <expression>) (s16vector-of-length-ec <k> <qualifier>* <expression>) (u16vector-of-length-ec <k> <qualifier>* <expression>) (s32vector-of-length-ec <k> <qualifier>* <expression>) (u32vector-of-length-ec <k> <qualifier>* <expression>) (s64vector-of-length-ec <k> <qualifier>* <expression>) (u64vector-of-length-ec <k> <qualifier>* <expression>) (f64vector-of-length-ec <k> <qualifier>* <expression>) (f32vector-of-length-ec <k> <qualifier>* <expression>)

And the following generators are provided:

(:s8vector <vars> <arg1> <arg>*) (:u8vector <vars> <arg1> <arg>*) (:s16vector <vars> <arg1> <arg>*) (:u16vector <vars> <arg1> <arg>*) (:s32vector <vars> <arg1> <arg>*) (:u32vector <vars> <arg1> <arg>*) (:s64vector <vars> <arg1> <arg>*) (:u64vector <vars> <arg1> <arg>*) (:f64vector <vars> <arg1> <arg>*) (:f32vector <vars> <arg1> <arg>*)

## License

Derived (almost verbatim) from the code for vector comprehensions in the SRFI-42 reference implementation. The copyright on that code is:

Copyright (C) Sebastian Egner (2003). All Rights Reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Modifications are copyright (C) Will M. Farr (2006), goverened by the same conditions.

## History

- 1.0
- initial version