Subject: Re: bug#37235: 26.1; Precedence error in calc-eval

From: Noam Postavsky <[email-masked]>
Date: Fri, 30 Aug 2019 11:26:57 -0400

Mauro Aranda <[email-masked]> writes:
>>
>> The precedence of calc-eval doesn't follow C-like rules.
>>
>>    (calc-eval "1/2*3") returns "0.166666666667"
>>
>> returning the same answer as (calc-eval "1/2/3").  It should return
>> "1.5".
>>
>
> It works as documented in the Calc manual, section 5.15 Formulas:
> C-h i m calc RET 5 m formulas RET
>
> Calc gives '/' lower precedence than '*' by default.

Also see (info "(calc) Basic Arithmetic"),

> To make Calc follow C-like rules, you can set it with the command
> calc-c-language.  You can read its documentation with:
> C-h i m calc RET i calc-c-language

which mentions calc-multiplication-has-precedence.