How to Calculate Hexadecimal to Decimal. Hex is a base 16 number and decimal is a base 10 number. We need to know the decimal equivalent of every hex number digit. See below of the page to check the hex to decimal chart. Here are the steps to convert hex to decimal: Get the decimal equivalent of hex from table.

6.15 Hex Floats. ISO C99 and ISO C++17 support floating-point numbers written not only in the usual decimal notation, such as 1.55e1, but also numbers such as 0x1.fp3 written in hexadecimal format. As a GNU extension, GCC supports this in C90 mode (except in some cases when strictly conforming) and in C++98, C++11 and C++14 modes. Floating Point Addition/Subtraction No this formula is not help ful. It can conert only 4 digit hex number only. I required 8 digit hex number to be converted in to decimal. For eg: 4224A012, the number is an 32 bit hex representation. I required the conversion of the number in to decimal floating point.