I'm writing a small and inadequate linear algebra library in C++ for a project (I'm sorry). I'm implementing matrices and operations using double precision numbers. I'm doing right? Should I implement a template class instead? Is there a more precise type around? ...
I'm writing code for a neural network, and I'm wondering whether I should do it or not. I'm actually somewhat worried that even using double might not wield good results and that I might have to migrate my code to a more efficient language, like c++. I've read in a question here that BigDecimal is 1000 times slower than double? That's a ...
Is it even that inaccurate? I re-implented the whole thing with Apfloat arbitrary precision and it made no difference which I should have known to start with!! public static double bearing(LatLng latLng1, LatLng latLng2) { double deltaLong = toRadians(latLng2.longitude - latLng1.longitude); double lat1 = toRadians(latLng1.latitude); ...
I understand that floating point arithmetic as performed in modern computer systems is not always consistent with real arithmetic. I am trying to contrive a small C# program to demonstrate this. eg: static void Main(string[] args) { double x = 0, y = 0; x += 20013.8; x += 20012.7; y += 10016.4; ...
Hi, I'm trying to port _controlfp( _CW_DEFAULT, 0xffffffff ); from WIN32 to Mac OS X / Intel. I have absolutely no idea how to port this instruction... And you? Thanks! ...
While working on a simple programming exercise, I produced a while loop (DO loop in Fortran) that was meant to exit when a real variable had reached a precise value. I noticed that due to the precision being used, the equality was never met and the loop became infinite. This is, of course, not unheard of and one is advised that, rather ...
Hello, I'm dealing with physical entities, such as time, speed and distance, and performing simple math, such as distance = time * speed, etc. Speed and Distance are double values rounded to 8th digit, and for Time values a .NET TimeSpan is used. Since TimeSpan rounds to a closest millisecond, I'm getting rounding errors, so I need to w...
I know it's an odd question, but does JavaScript have the capacity to work with double's as opposed to single floats? (64 bit floats vs. 32 bits.) ...
I am learning computer arithmetic. The book I use(Patterson and Hennessey) lists the below question. Write mips code to conduct double precision integer subtraction for 64-bit data. Assume the first operand to be in registers $t4(hi) and $t5(lo), second in $t6(hi) and $t7(lo). My solution to the answer is sub $t3, $t5, ...