2020-12-29 08:38:07 -08:00
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#!/usr/bin/env zsh
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2021-07-29 00:37:35 -07:00
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# YES_ZSH
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2021-07-29 05:44:12 -07:00
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# YES_BASH
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# YES_DASH
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2021-09-23 06:48:05 -07:00
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# YES_ASH
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2021-07-29 05:44:12 -07:00
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# though technically compatible with other shells,
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# extra functionality is through zsh's extended arithmetic functions.
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2021-07-29 00:37:35 -07:00
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2021-07-30 17:57:08 -07:00
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arith() { ### @-
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### perform arithmetic using the shell and display the result.
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2021-08-01 07:33:28 -07:00
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### see also [`hex`](#hex) and [`bin`](#bin).
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2021-08-01 09:45:19 -07:00
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### this example requires zsh:
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2021-08-01 07:33:28 -07:00
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###
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### ```
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### % db=6
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### % noglob arith 10**(db/20.)
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### 1.9952623149688795
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### ```
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2021-07-29 05:44:12 -07:00
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# <<<"$(($@))"
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printf "%s\n" "$(($@))"
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2021-07-29 00:37:35 -07:00
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}
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2021-08-02 13:48:46 -07:00
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[ -n "${preload+-}" ] || arith "$@"
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