49 lines
1.2 KiB
Scheme
49 lines
1.2 KiB
Scheme
;;; Copyright (C) 2024 David Thompson <dave@spritely.institute>
|
|
;;;
|
|
;;; Licensed under the Apache License, Version 2.0 (the "License");
|
|
;;; you may not use this file except in compliance with the License.
|
|
;;; You may obtain a copy of the License at
|
|
;;;
|
|
;;; http://www.apache.org/licenses/LICENSE-2.0
|
|
;;;
|
|
;;; Unless required by applicable law or agreed to in writing, software
|
|
;;; distributed under the License is distributed on an "AS IS" BASIS,
|
|
;;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
;;; See the License for the specific language governing permissions and
|
|
;;; limitations under the License.
|
|
|
|
;;; Commentary:
|
|
;;;
|
|
;;; Helpful math things.
|
|
;;;
|
|
;;; Code:
|
|
|
|
;; (library (math)
|
|
;; (export random
|
|
;; clamp)
|
|
;; (import (scheme base)
|
|
;; (hoot ffi))
|
|
|
|
;; (define-foreign random
|
|
;; "math" "random"
|
|
;; -> f64)
|
|
|
|
;; (define (clamp x min max)
|
|
;; (cond ((< x min) min)
|
|
;; ((> x max) max)
|
|
;; (else x))))
|
|
|
|
(define-module (math)
|
|
#:pure
|
|
#:use-module (scheme base)
|
|
#:use-module (hoot ffi)
|
|
#:export (random clamp))
|
|
|
|
(define-foreign random
|
|
"math" "random"
|
|
-> f64)
|
|
|
|
(define (clamp x min max)
|
|
(cond ((< x min) min)
|
|
((> x max) max)
|
|
(else x)))
|