floating-accuracy

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Why don't I get zero when I subtract the same floating point number from itself in Perl? [duplicate]

This question already has answers here: Closed 12 years ago. Possible Duplicates: Why is floating point arithmetic in C# imprecise?[详细]

2022-12-16 10:53 分类：问答
Why does ghci say that 1.1 + 1.1 + 1.1 > 3.3 is True?

I\'ve been going through a Haskell tutorial recently and noticed this behaviour when trying some simple Haskell expressions in the interactive ghci shell:[详细]

2022-12-16 03:28 分类：问答
Validate double value range and step

I\'m trying to construct an algorithm that validates that a double value is a member of a range defined with min, max and step values. The problem is checking that the value obeys the step rule. For i[详细]

2022-12-14 19:22 分类：问答
Can 12.1 be represented exactly as a floating point number?

This is in reference to the comments in this question: This code in Java produces 12.100000000000001 and this is using 64-bit doubles which can present 12.1 exactly. – Pyrolistical[详细]

2022-12-14 12:53 分类：问答
Integers and float precision

This is more of a numerical analysis rather than programming question, but I suppose some of you will be able to answer it.[详细]

2022-12-13 21:45 分类：问答
Python float - str - float weirdness

>>> float(str(0.65000000000000002)) 0.6开发者_如何学运维5000000000000002 >>> float(str(0.47000000000000003))[详细]

2022-12-11 23:20 分类：问答
polynomial evaluation accuracy, multiplication versus division

let us say I have have polynomial in x, divided by a power of x: p = (a + x(b + x(c + ..)))/(x**n) efficiency aside, which would be more accurate computation numerically, the abo开发者_开发技巧ve o[详细]

2022-12-11 20:37 分类：问答
Is floating point math broken?

Consider the following code: 0.1 + 0.2 == 0.3->false 0.1 + 0.2->0.30000000000000004 Why do these i开发者_如何学JAVAnaccuracies happen?Binary floating point math is like this. In most progr[详细]

2022-12-07 20:14 分类：问答
how to compute division accurately in python?

I tried the following computation in python: >>> 12.2 / 0.2 60.99999999999999 it\'s obviously that i开发者_如何学JAVAt didn\'t return the exact answer.[详细]

2022-12-07 17:30 分类：问答