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What is the difference between float and double? - Stack Overflow I've read about the difference between double precision and single precision However, in most cases, float and double seem to be interchangeable, i e using one or the other does not seem to affec
integer - What exactly is a float? - Stack Overflow This is the reason why we call them "floating point numbers" - we allow the decimal point to "float" depending on how big the number that we want to write is Let's give an example in decimal notation Suppose that you are given 5 cells to write down a number: _ _ _ _ _ If you don't use decimal points, then you can represent numbers from 0 to
Ranges of floating point datatype in C? - Stack Overflow The values for the float data type come from having 32 bits in total to represent the number which are allocated like this: 1 bit: sign bit 8 bits: exponent p 23 bits: mantissa The exponent is stored as p + BIAS where the BIAS is 127, the mantissa has 23 bits and a 24th hidden bit that is assumed 1 This hidden bit is the most significant bit (MSB) of the mantissa and the exponent must be
floating point - What range of numbers can be . . . - Stack Overflow For a given IEEE-754 floating point number X, if 2^E <= abs(X) < 2^(E+1) then the distance from X to the next largest representable floating point number (epsilon) is: epsilon = 2^(E-52) % For a 64-bit float (double precision) epsilon = 2^(E-23) % For a 32-bit float (single precision) epsilon = 2^(E-10) % For a 16-bit float (half precision) The above equations allow us to compute the following
Difference between (float *) *(float*) in C - Stack Overflow casting to float * here is not meaningful, because the void * address is the same as the float * address and also the int * address, the difference would be when you do pointer arithmetic You are casting the int pointer to a float and dereferencing the resulting float pointer, although it will violate strict aliasing rules in c Copy
Why are floating point numbers inaccurate? - Stack Overflow Why do some numbers lose accuracy when stored as floating point numbers? For example, the decimal number 9 2 can be expressed exactly as a ratio of two decimal integers (92 10), both of which can be