34 lines
950 B
Scheme
34 lines
950 B
Scheme
;;; Copyright (C) 2024 David Thompson <dave@spritely.institute>
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;;;
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;;; Licensed under the Apache License, Version 2.0 (the "License");
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;;; you may not use this file except in compliance with the License.
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;;; You may obtain a copy of the License at
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;;;
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;;; http://www.apache.org/licenses/LICENSE-2.0
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;;;
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;;; Unless required by applicable law or agreed to in writing, software
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;;; distributed under the License is distributed on an "AS IS" BASIS,
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;;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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;;; See the License for the specific language governing permissions and
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;;; limitations under the License.
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;;; Commentary:
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;;;
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;;; Helpful math things.
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;;;
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;;; Code:
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(define-module (math)
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#:use-module (hoot ffi)
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#:export (random pi clamp))
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(define-foreign random
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"math" "random"
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-> f64)
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(define pi (* 4.0 (atan 1.0)))
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(define (clamp x min max)
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(cond ((< x min) min)
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((> x max) max)
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(else x)))
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