Go Floating Point: Difference between revisions

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* Double precision <code>float64</code>, 15 digits of precision.
* Double precision <code>float64</code>, 15 digits of precision.
* Complex: <code>complex64</code> and <code>complex128</code>.
* Complex: <code>complex64</code> and <code>complex128</code>.
There is no <code>float</code>, as in the integer case, we must explicitly provide the precision.
Uninitialized variable value: <code>+0.000000e+000</code>
Uninitialized variable value: <code>+0.000000e+000</code>



Revision as of 00:36, 23 August 2023

Internal

Overview

Floating-point numbers are designated by the following pre-declared type identifiers:

  • Single precision float32 4 bytes IEEE-754 binary floating point, approximately 6 digits of precision.
  • Double precision float64, 15 digits of precision.
  • Complex: complex64 and complex128.

There is no float, as in the integer case, we must explicitly provide the precision.

Uninitialized variable value: +0.000000e+000

Floating-Point Literals

Decimals:

var x float = 123.45

Scientific notation, with exponent in base 10:

var x float = 1.23e3

Complex Numbers

var z complex128 = complex(2, 3)