Section 3: library functions
fDestroy – destroy a lock. Synopsis#include <util/ulocks.h>void fDestroy(int lock);Argumentslock – Lock to destroy. DescriptionDestroys the lock <lock> that was created by fCreate() or fFind(). MT-Level: Safe for unique <lock>. Return ValueNone. See AlsomCreate(3), fCreate(3), mUnlock(3), fUnlock(3), cBroadcast(3), cSignal(3), fFind(3), cDestroy(3), cCreate(3), mDestroy(3), cWait(3), fLock(3), fDestroy(3), mLock
fCreate – create a file lock. Synopsis#include <util/ulocks.h>NEOERR *fCreate(int *plock, const char *file);Argumentsplock – place for lock. file – path of file to use as lock. DescriptionCreates a file lock on named file <file>. The lock is returned in <plock>. MT-Level: Safe. Return Valueplock – set to lock identifier. See AlsomCreate(3), fCreate(3), mUnlock(3), fUnlock(3), cBroadcast(3),…
exzbuf – Z-buffered polygons demo. Allegro game programming library. Synopsis#include <allegro.h> Example exzbuf DescriptionThis program demonstrates how to use Z-buffered polygons and floating point 3D math routines. It also provides a simple way to compute fps (frames per second) using a timer. After selecting a screen resolution through the standard GUI dialog, the example shows…
exxfade – Truecolor image loading and fades. Allegro game programming library. Synopsis#include <allegro.h> Example exxfade DescriptionThis program demonstrates how to load and display bitmap files in truecolor video modes, and how to crossfade between them. You have to use this example from the command line to specify as parameters a number of graphic files. Use…
exupdate – Supporting different screen update methods in a single program. Allegro game programming library. Synopsis#include <allegro.h> Example exupdate DescriptionThis program demonstrates how to support double buffering, page flipping, and triple buffering as options within a single program, and how to make things run at a constant rate no matter what the speed of your…
exunicod – Using Unicode string functions. Allegro game programming library. Synopsis#include <allegro.h> Example exunicod DescriptionThis program demonstrates the use of the 16-bit Unicode text encoding format with Allegro. The example displays a message translated to different languages scrolling on the screen using an external font containing the required characters to display those messages. Note how…
extruec – Truecolor pixel format conversions. Allegro game programming library. Synopsis#include <allegro.h> Example extruec DescriptionThis program shows how to specify colors in the various different truecolor pixel formats. The example shows the same screen (a few text lines and three coloured gradients) in all the color depth modes supported by your video card. The more…
extrans – Lighting and translucency effects. Allegro game programming library. Synopsis#include <allegro.h> Example extrans DescriptionThis program demonstrates how to use the lighting and translucency functions. The first part of the example will show a dark screen illuminated by a spotlight you can move with your mouse. After a key press the example shows the full…
extract_font_range – Extracts a range of characters from a font. Allegro game programming library. Synopsis#include <allegro.h> FONT *extract_font_range(FONT *f, int begin, int end) DescriptionThis function extracts a character range from a font and returns a new font that contains only the range of characters selected by this function. You can pass -1 for either the…
QuantLib::IntervalPrice – interval price Synopsis#include <ql/prices.hpp> Public Typesenum Type { Open, Close, High, Low } Public Member FunctionsIntervalPrice (Real open, Real close, Real high, Real low) Inspectors Real open () const Real close () const Real high () const Real low () const Real value (IntervalPrice::Type) const Modifiers void setValue (Real value, IntervalPrice::Type) void setValues…
QuantLib::IntervalPrice – interval price Synopsis#include <ql/prices.hpp> Public Typesenum Type { Open, Close, High, Low } Public Member FunctionsIntervalPrice (Real open, Real close, Real high, Real low) Inspectors Real open () const Real close () const Real high () const Real low () const Real value (IntervalPrice::Type) const Modifiers void setValue (Real value, IntervalPrice::Type) void setValues…
QuantLib::FDBermudanEngine – Finite-differences Bermudan engine. Synopsis#include <ql/pricingengines/vanilla/fdbermudanengine.hpp> Inherits VanillaOption::engine, and QuantLib::FDMultiPeriodEngine. Public Member FunctionsFDBermudanEngine (const boost::shared_ptr< GeneralizedBlackScholesProcess > &process, Size timeSteps=100, Size gridPoints=100, bool timeDependent=false) void calculate () const Protected Member Functionsvoid initializeStepCondition () const void executeIntermediateStep (Size) const Protected AttributesReal extraTermInBermudan Detailed DescriptionFinite-differences Bermudan engine. Examples: EquityOption.cpp. AuthorGenerated automatically by Doxygen for QuantLib from…
extimer – Using the timer (delays and interrupts). Allegro game programming library. Synopsis#include <allegro.h> Example extimer DescriptionThis program demonstrates how to use the timer routines. These can be a bit of a pain, because you have to be sure you lock all the memory that is used inside your interrupt handlers. The first part of…
exsyscur – Allegro game programming library. Synopsis#include <allegro.h> Example exsyscur DescriptionThis program demonstrates the use of hardware accelerated mouse cursors. See AlsoEND_OF_MAIN(3), SCREEN_H(3), SCREEN_W(3), allegro_error(3), allegro_init(3), allegro_message(3), clear_to_color(3), enable_hardware_cursor(3), font(3), gfx_capabilities(3), install_keyboard(3), install_mouse(3), install_timer(3), makecol(3), readkey(3), screen(3), select_mouse_cursor(3), set_gfx_mode(3), show_mouse(3), text_height(3), textprintf_centre_ex(3)
exswitch – Controlling the console switch mode for background running. Allegro game programming library. Synopsis#include <allegro.h> Example exswitch DescriptionThis program shows how to control the console switching mode, and let your program run in the background. These functions don’t apply to every platform and driver, for example you can’t control the switching mode from a…
exstream – Playing audio streams. Allegro game programming library. Synopsis#include <allegro.h> Example exstream DescriptionThis program shows how to use the audio stream functions to transfer large blocks of sample data to the sound card. In this case, the sample data is generated during runtime, and the resulting sound reminds of a car engine when you…
exstars – 3d starfield and lightsourced spaceship. Allegro game programming library. Synopsis#include <allegro.h> Example exstars DescriptionThis program draws a 3D star field (depth-cued) and a polygon starship (controllable with the keyboard cursor keys), using the Allegro math functions. See AlsoBITMAP(3), END_OF_MAIN(3), MATRIX(3), PALETTE(3), SCREEN_H(3), SCREEN_W(3), allegro_error(3), allegro_init(3), allegro_message(3), apply_matrix(3), blit(3), clear_bitmap(3), create_bitmap(3), cross_product(3), destroy_bitmap(3), dot_product(3),…
exsprite – Datafiles access and sprite animation. Allegro game programming library. Synopsis#include <allegro.h> Example exsprite DescriptionThis example demonstrates how to use datafiles, various sprite drawing routines and flicker-free animation. Why is the animate() routine coded in that way? As you probably know, VIDEO RAM is much slower than "normal" RAM, so it’s advisable to reduce…
exspline – Constructing smooth movement paths from spline curves. Allegro game programming library. Synopsis#include <allegro.h> Example exspline DescriptionThis program demonstrates the use of spline curves to create smooth paths connecting a number of node points. This can be useful for constructing realistic motion and animations. The technique is to connect the series of guide points…
exshade – Gouraud shaded sprites. Allegro game programming library. Synopsis#include <allegro.h> Example exshade DescriptionThis program demonstrates how to draw Gouraud shaded (lit) sprites. In an apparently black screen, a planet like sprite is drawn close to the middle of the screen. In a similar way to how the first test of extrans works, you move…