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Some issues on floating-point precision under Linux LG #53
Some issues on floating-point precision under Linux . s : single; { 32-bit real } r : real; { 48-bit real } d : double; { 64-bit real } e : extended; { 80-bit real } i : integer; .

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precision linux real floating point


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The Facts on precision linux real floating point

Numbers - IBM DB2 9.7 for Linux, UNIX, and Windows
Decimal floating-point numbers can have a precision of 16 or 34. Decimal floating-point supports both exact representations of real numbers and approximation .

An Introduction to GCC - Floating-point issues
In this mode the results of each extended-precision floating-point operation are . On x86 GNU/Linux systems the default mode is extended precision (with the .

linux - How to use Floating Point extended precision in a MacOs or ...
Oct 6, 2011 . Ultimately, you must keep in mind that floating-point arithmetic is not real arithmetic. The fact that the result obtained on Linux is closer to the .

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Causes of precision linux real floating point

Resolution of Differences Between X86 Linux/glibc Floating-Point to ...
Resolution of Differences Between X86 Linux/glibc Floating-Point to Integer . the floating point processor is operated by default in extended precision mode. . the correct result, i.e., the number with the smallest error from the real result.

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Floating Point Math in Bash | Linux Journal
Jul 30, 2008 . The obvious candidate for adding floating point capabilities to bash is bc. bc is, to quote the man page: An arbitrary precision calculator language . Next time around I'll show you one place you can put this to real world use.

Data Representation Overview
The size is controlled by the -integer-size (Linux* OS and Mac OS* X) or . Single -precision real floating-point values in IEEE S_floating format ranging from .

PGI | Support | FAQ
How come we get different answers on one platform versus a linux x86 platform? . I declared all my variables as 'REAL*8', yet I get different answers with '-r8' set. . To reduce the precision, the option '-pc 64' (round floating point operations .

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Symptoms and Complications of precision linux real floating point

gfortran(1): GNU Fortran compiler - Linux man page
If -fdefault-real-8 is given, "DOUBLE PRECISION" would instead be promoted . are likely to trigger floating point exceptions when "ffpe-trap=precision" is used.

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Primitive data type - Wikipedia, the free encyclopedia
32 bits, Double Word, long int (win32, win64, 32-bit Linux), ?2147483648 to + . Because floating-point numbers have limited precision, only a subset of real or .

GNU Linux and the Extended Precision on x86 Processors
Dec 30, 2010 . The file /usr/include/fpu_control.h under Linux/x86 says: . For instance, let us consider the two floating-point double-precision numbers x . the GCC bug 323 and the duplicates (which are in fact not always real duplicates, .

FFTW - Installation and Customization
This will build the uniprocessor complex and real transform libraries along with the test programs. . --enable-float Produces a single-precision version of FFTW ( float ) instead of the . all installed libraries and header files to indicate the floating-point precision. . Specifically, we have tested these hacks on Linux with gcc 2.

Deterministic cross-platform floating point arithmetics
This document currently only deals with floating point precision. . I could get somebody to test some things on Linux on a Nokia N810 (ARM) but that does not .

How LabVIEW Stores Data in Memory - LabVIEW 8.5 Help
(Windows, Linux, and Mac Intel) Extended-precision floating-point numbers have an . Complex single-precision floating-point numbers consist of real and .

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Fifteen Digits Don't Round-Trip Through SQLite Reals - Exploring ...
Dec 3, 2010 . SQLite represents a decimal floating-point number that has real affinity as a . the Linux build of the same source code uses extended-precision .

REAL - IBM DB2 9.7 for Linux, UNIX, and Windows
DB2 Version 9.7 for Linux, UNIX, and Windows . The REAL function returns a single-precision floating-point representation of either: A number; A string .

NUMBER data type - IBM DB2 9.7 for Linux, UNIX, and Windows
If NUMBER is specified without precision and scale attributes, it is mapped to . The rules for integer, decimal, and floating-point constants continue to apply. . and can be cast to REAL using the CAST specification or the cast function REAL.