Questions tagged [math]

For questions about designing and implementing mathematical functions or operations in a programming language.

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30 votes
11 answers

Why do so many programming languages not have a "built-in" way to do simple math functions?

Note 1: My question is not about the factorial function. It's about "simple math functions" that high-school level pocket calculators can do, but most programming languages cannot do without ...
Nike Dattani's user avatar
20 votes
5 answers

Is there any particular reason to only include 3 out of the 6 trigonometry functions?

Most languages seem to only have sin cos and tan. While the other 3 are just ...
CPlus's user avatar
  • 7,891
19 votes
3 answers

Why does MATLAB have left division/solve?

In MATLAB (and Octave), the \ (or mldivide) and \. operators are provided with the exact ...
Adám's user avatar
  • 3,138
19 votes
4 answers

What obstacles prevented C and C++ from standardizing π?

C does not even have M_PI standardized. C++ only added std::numbers::pi very recently. Yes, the fact that this took so long does ...
CPlus's user avatar
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13 votes
5 answers

Distinguishing modulo (Euclidean division) from remainder

The % operator in most programming language provide a remainder from integer division. When both operands are positive all works as expected. But when the number is ...
CPlus's user avatar
  • 7,891
10 votes
2 answers

Can you represent a language with a group with a small/simple generator set?

I'm wondering whether its possible to construct a group where the elements are all possible valid programs, with a small or simple generator set. That way you could have a series of operations you can ...
debater-coder's user avatar
9 votes
6 answers

What syntax could be used to implement both an exponentiation operator and XOR?

C does not have an exponentiation operator, so that freestanding implementations that lack the math libraries could lack exponentiation as a whole, and still be permissible by the C standard. As a ...
CPlus's user avatar
  • 7,891
7 votes
1 answer

Why is truncated or non-Euclidean division/modulo the norm?

Related to, but not the same question: Distinguishing modulo (Euclidean division) from remainder There are multiple ways a modulo operation can be performed. Most implementations, in C, for example, ...
CPlus's user avatar
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6 votes
2 answers

Are there any disadvangates to requiring sincos() type functions?

sincos() is just a way to compute sin() and cos() at once, possibly at improved performance ...
CPlus's user avatar
  • 7,891
5 votes
5 answers

What programming languages contain a built-in imaginary data type?

Many languages like R, Julia, and Python store imaginary numbers as a complex number with a 0 valued real component. We may see this with the following R code: ...
Adam Hyland's user avatar
5 votes
9 answers

Correctness of mixed signed/unsigned arithmetic

I'm implementing signed and unsigned integers in my language. They are represented in C as signed long and unsigned long ...
Matheus Moreira's user avatar