### Description

Utility functions for SRFI-4 vectors.
### Version

- 1.4 Build script bug fix
- 1.3 Build script updated for better cross-platform compatibility
- 1.2 Extended fold and map interface to support multiple vector arguments
- 1.1 Added foldi and mapi procedures
- 1.0 Initial release

### Usage

(require-extension srfi-4-utils)
### Documentation

`srfi-4-utils` contains a set of convenience procedures for SRFI-4 vectors: `fold`, `map`, `quick-sort!`.

#### Procedures

For each value of `TAG` in `{ s8, u8, s16, u16, s32, u32, f32, f64 }`, the following procedures are defined:

**procedure:** TAGvector-fold :: F * X0 * V [* V1 ... VN] -> XN
where `F :: V(I) [ * V1(I) ... VN(I)] * AX -> AX`
**procedure:** TAGvector-map :: F * V [ * V1 ... VN] -> V
**procedure:** TAGvector-foldi :: F * X0 * V [ * V1 ... VN] -> XN
where `F :: I * V(I) [ * V1(I) ... VN(I)] * AX -> AX`
**procedure:** TAGvector-mapi :: F * V [* V1 ... VN] -> V
where `F :: I * V(I) [* V1(I) ... VN(I)] -> V`
**procedure:** TAGvector-quick-sort! :: V * ELT< [ * START * END] -> V
where `F :: i1 * V(i1) * i2 * V(i2) -> boolean`
### Examples

csi> (f64vector-map (lambda (v) (* 2 v)) (f64vector 1 2 3))
-> #f64(2.0 4.0 6.0)
csi> (f64vector-fold (lambda (v ax) (+ v ax)) (f64vector 1 2 3) 0)
-> 6.0
;; input vector is modified
csi> (f64vector-quick-sort! (f64vector 1 4 2 3) (lambda (i1 v1 i2 v2) (< v1 v2)))
#f64(1.0 2.0 3.0 4.0)

### License

Copyright 2007 Ivan Raikov and the Okinawa Institute of Science and Technology
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
A full copy of the GPL license can be found at
<http://www.gnu.org/licenses/>.