Feedback Question: My investigation has been focused on finding a compact method of encoding float data into a binary format represented by uint64_t, which enables effortless distribution to different microcontrollers over a network. It must not rely on the float data types of the system, including memory layout and endianness . Whilst reading through this […]

# Category: Floating point

## Comparison of float32 and float64 precision in Golang

Although a short variable declaration can still be used, the GO FAQ mentions a debate prior to 2011 which can be seen in this thread. The issue with comparing integer types and float types is that for integer types, size only matters if it overflows, whereas for float types, size always affects the answer unless […]

## The Simplest Method to Obtain Machine Epsilon using Go Programming Language

Feedback Solution 1: The problem was not defined, but upon checking the issue tracker, it was marked as “working as intended. Here is a link to issue 966 on the Google Code website related to Go programming language. It appears that the recommended approach is to utilize math.Nextafter to obtain the desired result. The formula, […]

## Converting between float and long data types in C

Feedback Question: As I perused Chapter 3 on data types in C Primer Plus, the author made a statement. By interpreting the bit pattern of the float number 256.0 as a long value, one can obtain the value of 113246208. Could someone assist me with understanding the conversion process? I am having difficulty comprehending it. […]

## Binary representation of normalized floating point numbers

Normalisation aims to enhance the accuracy and clarity of floating point numbers, ultimately streamlining arithmetic operations involving them. Solution 1: If I understand correctly, you are referring to IEEE754. It seems that your book contains an error, unless I have misunderstood the situation. In IEEE754, all numbers are normalized except for subnormal numbers whose mantissa […]

## Converter for IEEE Single Precision Floating Point

In the domain of IEEE floating point numbers, specifically utilizing 32-bit single-precision, I would like to present an example of converting an integer to IEEE floating point representation. The aspect that perplexes me is the process of removing the leading 1 and appending 10 zeros at the end, resulting in a binary representation of [10000001110010000000000]. […]

## Understanding the exact significance of the g printf specifier

%g is the abbreviated form of a number, while %e represents the number in scientific notation, with a lowercase exponent. The choice between using -style or -style formatting is solely determined by the magnitude of the exponent required in -style notation, and is not directly influenced by which representation would be more concise. Solution 1: […]

## Acquiring User Input in C Programming without Using scanf

The main challenge is to halt the character reading process upon consuming the longest valid input, which may occur in the midst of a user input line. A more effective approach would be to adopt Solution 2, wherein an alternate key is utilized to terminate the string if you intend to accept a Newline (Enter) […]

## Converting Strings to Floats in C

In case the converted value exceeds the range of values that can be represented by a double, it leads to undefined behavior. Solution 1: Instead of the options given below, utilize either of the two MSDT codes mentioned: – atof() – strtof() printf(“float value : %4.8fn” ,atof(s)); printf(“float value : %4.8fn” ,strtof(s, NULL)); The following […]

## Performing Division Operations in C with or without Floating-Point Numbers

To prevent unnecessary slowing down of loops and the occurrence of floating point inaccuracy bugs, it is advisable to refrain from using floating point expressions in loop conditions. Instead, when using variables such as ‘s’ and requiring floating point division, one can simply convert the constant to a floating point number by adding a decimal […]