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srfi-4-utils

Utility functions for SRFI-4 vectors.

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)

About this egg

Author

Ivan Raikov

Version history
1.6
Documentation converted to wiki format
1.5
Ported to Chicken 4
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

License

 
Copyright 2007-2010 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/>.