floating point - Representing float values in Java - Stack Overflow
2013年1月14日 · Floating point literals in Java is a double value by default.. JLS 3.10.2 Floating-Point Literals. A floating-point literal is of type float if it is suffixed with an ASCII letter F or f; otherwise its type is double and it can optionally be suffixed with an ASCII letter D or d.
Floating point versus fixed point: what are the pros/cons?
floating point does not store the exponent and mantissa separately and the mantissa is a goofy number, what is left over after the exponent and sign, like 23 bits, not 16 or 32 or 64 bits. floating point math at its core uses fixed point logic with extra logic and extra steps required.
c++ - Understanding floating point precision - Stack Overflow
2012年8月21日 · If you consider density linearly, then the floating point numbers get exponentially more dense as you get closer to 0. As you get extremely closed to 0, and the exponent reaches its lowest point, the floating point numbers become denormalized. At this point, they have 1 extra significant figure and are thus more precise.
floating point - When should I use the "strictfp" keyword in java ...
My last point is --What is IEEE754 in short IEEE 754 defines standard method for both floating point calculations and storage of floating point values in either single (32-bit, used in Java floats) or double (64-bit, used in Java doubles) precision.It also defines norms for intermediate calculations and for extended precision formats.
Floating point inaccuracy examples - Stack Overflow
2010年1月20日 · Since many floating-point numbers are merely approximations of the exact value this means that for a given approximation f of a real number r there can be infinitely many more real numbers r 1, r 2, ... which map to exactly the same approximation. Those numbers lie in …
floating point - Difference between decimal, float and double in …
2009年3月6日 · The Decimal, Double, and Float variable types are different in the way that they store the values. Precision is the main difference where float is a single precision (32 bit) floating point data type, double is a double precision (64 bit) floating point data type and decimal is a 128-bit floating point data type. Float - 32 bit (7 digits)
Regular expression for floating point numbers - Stack Overflow
hello world 3.14 this contains a floating point number to be a valid floating point number - because although the string contains a floating point number, the whole string is not a valid floating point number. Other answers may suit your needs better if you just want to detect floating points within larger strings/text.
c - Floating Point Modulo Operation - Stack Overflow
I have to implement this in assembly, so fmod, division, multiplication, etc. aren't available to me with just one instruction. My processor uses 16-bit words and I have implemented 32-bit floating point addition, subtraction, multiplication, division, square root, cosine, and sine.
floating point - How to round a float value in c#? - Stack Overflow
Required reading on this topic is What Every Computer Scientist Should Know About Floating-Point Arithmetic. You might use decimal instead, which represents numbers using decimal floating point and can represent 0.8 exactly. Or you might choose to continue using binary floating point, but only display limited numbers of digits after the decimal ...
floating point - Java:Why should we use BigDecimal instead of …
2016年4月16日 · In your answer you say it's only matter of "precision", and you say that usually money numbers are not "large enough for need the presicion of BigDecimal"--- what does it mean? E.g. very small number 0.1 can't be stored in double precisely (without special encodig, e.g. moving floating point right). Not because of its "largeness", but for ...