How can I make a floating point comparison function for use with qsort?
Frequently Asked QuestionsHere is a simple example (called "Sort Floats"): // Sort a list of floating point values #define USE_TI89 // Compile for TI-89 #define USE_TI92PLUS // Compile for TI-92 Plus #define USE_V200 // Compile for V200 #define MIN_AMS 100 // Compile for AMS 1.00 or higher #define SAVE_SCREEN // Save/Restore LCD Contents #include <tigcclib.
Why doesn't my floating-point comparison work?
Newbie Questions / Answers Updated! , C++ FAQ LiteWhy is cos(x) != cos(y) even though x == y? (Or sine or tangent or log or just about any other floating point computation) New!
What is so ''unsafe'' about floating point?
Infrequently Asked Questions in comp.lang.cHave you tried EXAMINE STICK? The stick has a sharp point, which punctures the raft, which no longer floats. Don't bring the stick into the raft with you.
Why doesn't map's operator< use the map's comparison function?
SGI STL: Frequently Asked QuestionsA map has a notion of comparison, since one of its template parameters is a comparison function. However, operator< for maps uses the elements' operator< rather than that comparison function. This appears odd, but it is deliberate and we believe that it is correct. the most trivial level, this isn't a bug in our implementation because it's what's mandated by the C++ standard. (The behavior of operator< is described in Table 65, in section 23.1.
How do I use variable precision fixed and floating point computation in Super-FinSim?
Frequently Asked Questions about FinSimi) Please read chapter 8 of Super FinSim 8.4 Users Guide, which is available in .htm as well as in .pdf format on this WEB site. ii) The commercially available FinSim has a limitation of 127 bits of precision for trigonometric, and hyperbolic functions and of 82 bits for exponential and logarithmic functions. Customized versions may support enhanced precision.
What constitutes a floating point operation (a FLOP)?
The Aggregate: Frequently Asked Questions about KASY0Obviously, any operation on a floating-point value, right? Well, yes and no.
Is floating point arithmetic supported?
SystemCrafter - FAQNo, floating point is not supported by SystemCrafter SC Version 2.0. Floating point hardware implementations are extremely resource intensive and floating point algorithms can normally be more efficiently realised using integer arithmetic.
How can I make a variable global from within a function?
MATLAB Frequently Asked QuestionsYou can in MATLAB 4. The following hack is from Laura Needles and Mike Kantner . Define the script file 'mkglobal.m', containing function [] = mkglobal(var) % MKGLOBAL mkglobal(var) - make var a global variable if ~exist('mkglobal_var'), mkglobal_1; end; mkglobal_var = var; mkglobal_2
What is a function point?
IFPUG: Frequently Asked QuestionsFunction Points measure software size by quantifying the functionality provided to the user based solely on logical design and functional specifications. With this in mind, the objectives of FP counting are to: measure software development and maintenance rates and size independently of the technology used for implementation; and
Can I use point sprites in the fixed-function pipeline?
Frequently Asked GeForce3Yes, but GeForce3 doesn't support specifying a per-vertex point size when using the fixed-function pipeline. However, you can specify the global point size. If you wish to use per-vertex point sizes, you must use vertex shaders.
Can I use 'dbup' and 'dbdown' within a function?
MATLAB Frequently Asked QuestionsMATLAB wasn't designed to be used this way. But, if you don't reference any variables between your calls to 'dbup' and 'dbdown' (i.e., you just use 'save', 'who', 'dir', etc), it should work. Otherwise, you may well run into problems. If you 'dbup' while in a function, you change the workspace context while continuing execution of the original function. This means that subsequent references to variables will be bound to variables in a different workspace.
What are floating-point numbers?
Frequently Asked Questions (FAQ)A floating-point number is a number that has a fractional part; it is written with a decimal point, e.g.: 2.5, 3.141, -5.99. Floating point numbers are distinguished from integers, which have no fractional part. In Java, there are two types of floating-point numbers, those of type float and those of type double. Numbers of type double have higher precision than those of type float. By default, we will use double for floating-point numbers in CS111.
How to convert floating point decimal to binary?
JavaChina: SCJP Questions & Answers by Roseanne Zhang (8...In the integer part, you devide by 2. In the decimal part, you multiply by 2 Decimal Binary 2 10 4 100 8 1000 16 10000 0.5 0.1 0.25 0.01 0.125 0.001 0.0625 0.0001 ... You should get my point now.
How can I handle floating-point exceptions gracefully?
System DependenciesOn many systems, you can define a function matherr which will be called when there are certain floating-point errors, such as errors in the math routines in <math.h>. You may also be able to use signal (see question 19.38) to catch SIGFPE. See also questions 14.9 and 20.6b.
How can I store a floating point number into an integer?
COSC 2410: Computer Organization and Programming Lab Web Pag...FIST stores the value in ST to the specified memory location or register. Temporary-real values in registers are converted to the appropriate integer, BCD, or floating-point format as they are stored. With FSTP, FISTP, and FBSTP, the ST register value is popped off the stack. Memory operands can be 32-, 64-, or 80-bit real numbers for FSTP, or 16-, 32-, or 64-bit integers for FISTP.
Can you change or enter floating point values?
Binary file editor for Windows, FAQYou can enter a new floating point value in the fields of the Properties dialog. Just type the new value into the "value" field and press Enter (or Esc to abort). You can enter IEEE floating point values using the "IEEE" page or IBM floating point values using the "IBM FP" page. You can also change the byte-order using the "Big-endian" check box and enter 32-bit or 64-bit values depending on the format selected.
When I make coffee or tea, why is there scum floating on top?
City of South Bend :: Water Works :: FAQDue to South Bend Water Works groundwater supply, our water is especially hard. Sometimes the minerals in the water will form a scum-like deposit when they are combined with the natural oils and other ingredients in the coffee bean or tea leaf. This substance, composed of natural oils and minerals, is harmless. To alleviate future coffee or tea mishaps, you may opt to use softened water or non-bleached coffee filters (see additional note on softened water under "white flakes" information below).
Why does a decimal point not indicate floating-point?
comp.lang.forth Frequently Asked Questions (1/6): General/Mi...In the old days Forth did not have floating-point numbers; instead, fixed-point arithmetic was used, usually on double-cell numbers. So, a decimal point indicated a double number (the position of the decimal point was stored in the variable DPL for potential use by fixed-boint software). In ANS Forth, a decimal point at the end indicates a double-cell number, and an E in the number indicates a floating-point number (when BASE is decimal). All other ways to write numbers are system-dependent.
How do I maintain my Function Point Data?
Function Points, Measures, and Software MetricsFunction Points are always counted following the same published rules. When maintaining or updating function point data, there is a difference between Work vs. Base. Work is everything we do encompassed in the FP model. Base is the net total functionality available to "users" at any point in time. In a brand new development 1000 fp of Work should deliver 1000 fp of Base functionality to the user. However, some development yields no on-going functionality, e.g. a conversion.
