Type

Data Type

There are 2 categories of data types:

1. Primitive Data Type
2. Composite Data Type

Other things to be aware of:

• Plain Old Data

Also see Signed vs Unsigned Numbers.

Floating Point Numbers

See FP32 (float) and FP64 (double).

Dealing with Floats and the decimals

float val = sqrt(2);
// If you want 12 decimal places
cout << setprecision(12) << fixed << val << endl;

Functions you can use:

ceil(5.3) // 6
floor(5.3) // 5
 
# round() will round to closest integer
round(5.3) // 5
round(5.6) // 6

How to Convert Binary Number to Float?

I don’t know. Check this article out. Hemal Shah talked about this to me, about how there is the exponent and the mantissa.

• Update: Since my time an Tesla, I have become expert of floating point, by implementing an internal floating point library.

Data Types From STAT206

This is also the same categorization we do in Machine Learning.

• Categorical
  • Ordinal (subtype)
• Numerical
  • Discrete
  • Continuous

Miscallaneous

Integral Type

An integral type is anything that can be represented by an integer. Ex: Character and String, Enum (C++).