pidfile_open pidfile_write pidfile_close pidfile_remove – library for PID files handling Library Lb libbsd Synopsis In bsd/libutil.h Ft struct pidfh * Fn pidfile_open const char *path mode_t mode pid_t *pidptr Ft int Fn pidfile_write struct pidfh *pfh Ft int Fn pidfile_close struct pidfh *pfh Ft int Fn pidfile_remove struct pidfh *pfh Description The pidfile family of…
system_data_types – overview of system data types Description aiocb Include: <aio.h>. struct aiocb { int aio_fildes; /* File descriptor */ off_t aio_offset; /* File offset */ volatile void *aio_buf; /* Location of buffer */ size_t aio_nbytes; /* Length of transfer */ int aio_reqprio; /* Request priority offset */ struct sigevent aio_sigevent; /* Signal number and…
persp_project, persp_project_f – Projects a 3d point into 2d screen space. Allegro game programming library. Synopsis #include <allegro.h> void persp_project(fixed x, fixed y, fixed z, fixed *xout, fixed *yout); void persp_project_f(float x, float y, float z, float *xout, float *yout); Description Projects the 3d point (x, y, z) into 2d screen space, storing the result…
persp_project, persp_project_f – Projects a 3d point into 2d screen space. Allegro game programming library. Synopsis #include <allegro.h> void persp_project(fixed x, fixed y, fixed z, fixed *xout, fixed *yout); void persp_project_f(float x, float y, float z, float *xout, float *yout); Description Projects the 3d point (x, y, z) into 2d screen space, storing the result…
perror – print a system error message Synopsis #include <stdio.h> void perror(const char *s); #include <errno.h> const char * const sys_errlist[]; int sys_nerr; int errno; /* Not really declared this way; see errno(3) */ Feature Test Macro Requirements for glibc (see feature_test_macros(7)): sys_errlist, sys_nerr: From glibc 2.19 to 2.31: _DEFAULT_SOURCE Glibc 2.19 and earlier: _BSD_SOURCE…
QuantLib::EnergyBasisSwap – Energy basis swap. Synopsis void performCalculations () const Protected Attributes Inherits QuantLib::EnergySwap. Public Member Functions EnergyBasisSwap (const Calendar &calendar, const boost::shared_ptr< CommodityIndex > &spreadIndex, const boost::shared_ptr< CommodityIndex > &payIndex, const boost::shared_ptr< CommodityIndex > &receiveIndex, bool spreadToPayLeg, const Currency &payCurrency, const Currency &receiveCurrency, const PricingPeriods &pricingPeriods, const CommodityUnitCost &basis, const CommodityType &commodityType, const boost::shared_ptr<…
QuantLib::NonLinearLeastSquare – Non-linear least-square method. Synopsis NonLinearLeastSquare (Constraint &c, Real accuracy=1e-4, Size maxiter=100) Default constructor. NonLinearLeastSquare (Constraint &c, Real accuracy, Size maxiter, boost::shared_ptr< OptimizationMethod > om) Default constructor. ~NonLinearLeastSquare () Destructor. Array & perform (LeastSquareProblem &lsProblem) Solve least square problem using numerix solver. void setInitialValue (const Array &initialValue) Array & results () return the results…
QuantLib::GeneralStatistics – Statistics tool. Synopsis void add (Real value, Real weight=1.0) adds a datum to the set, possibly with a weight template<class DataIterator > void addSequence (DataIterator begin, DataIterator end) adds a sequence of data to the set, with default weight template<class DataIterator , class WeightIterator > void addSequence (DataIterator begin, DataIterator end, WeightIterator wbegin)…
ql/utilities/dataformatters.hpp – output manipulators Synopsis #include <ql/utilities/null.hpp> #include <ostream> Functions template<typename T > std::ostream & operator<< (std::ostream &, const null_checker< T > &) std::ostream & operator<< (std::ostream &, const ordinal_holder &) template<typename T > std::ostream & operator<< (std::ostream &, const power_of_two_holder< T > &) std::ostream & operator<< (std::ostream &, const percent_holder &) template<typename T >…
QuantLib::ExtendedEqualJumpsBinomialTree – Base class for equal jumps binomial tree. Synopsis virtual Real probUp (Time stepTime) const =0 virtual Real dxStep (Time stepTime) const =0 Protected Attributes Inherits ExtendedBinomialTree< T >. Public Member Functions ExtendedEqualJumpsBinomialTree (const boost::shared_ptr< StochasticProcess1D > &process, Time end, Size steps) Real underlying (Size i, Size index) const Real probability (Size i, Size,…
PCRE – Perl-compatible regular expressions Utf-8, Utf-16, Utf-32, And Unicode Property Support As well as UTF-8 support, PCRE also supports UTF-16 (from release 8.30) and UTF-32 (from release 8.32), by means of two additional libraries. They can be built as well as, or instead of, the 8-bit library. Utf-8 Support In order process UTF-8 strings,…
PCRE – Perl-compatible regular expressions Pcre Regular Expression Syntax Summary The full syntax and semantics of the regular expressions that are supported by PCRE are described in the pcrepattern documentation. This document contains a quick-reference summary of the syntax. Quoting
PCRE – Perl-compatible regular expressions Pcre Discussion Of Stack Usage When you call pcre[16|32]_exec(), it makes use of an internal function called match(). This calls itself recursively at branch points in the pattern, in order to remember the state of the match so that it can back up and try a different alternative if the…
PCRE – Perl-compatible regular expressions Pcre Sample Program A simple, complete demonstration program, to get you started with using PCRE, is supplied in the file pcredemo.c in the PCRE distribution. A listing of this program is given in the pcredemo documentation. If you do not have a copy of the PCRE distribution, you can save…
PCRE – Perl-compatible regular expressions Saving And Re-Using Precompiled Pcre Patterns If you are running an application that uses a large number of regular expression patterns, it may be useful to store them in a precompiled form instead of having to compile them every time the application is run. If you are not using any…
PCRE – Perl-compatible regular expressions. Synopsis #include <pcreposix.h> int regcomp(regex_t *preg, const char *pattern, int cflags); int regexec(regex_t *preg, const char *string, size_t nmatch, regmatch_t pmatch[], int eflags); size_t regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size); void regfree(regex_t *preg); Description This set of functions provides a POSIX-style API for the PCRE regular expression…
PCRE – Perl-compatible regular expressions Pcre Performance Two aspects of performance are discussed below: memory usage and processing time. The way you express your pattern as a regular expression can affect both of them. Compiled Pattern Memory Usage Patterns are compiled by PCRE into a reasonably efficient interpretive code, so that most simple patterns do…
PCRE – Perl-compatible regular expressions Pcre Regular Expression Details The syntax and semantics of the regular expressions that are supported by PCRE are described in detail below. There is a quick-reference syntax summary in the pcresyntax page. PCRE tries to match Perl syntax and semantics as closely as it can. PCRE also supports some alternative…
PCRE – Perl-compatible regular expressions Partial Matching In Pcre In normal use of PCRE, if the subject string that is passed to a matching function matches as far as it goes, but is too short to match the entire pattern, PCRE_ERROR_NOMATCH is returned. There are circumstances where it might be helpful to distinguish this case…
PCRE – Perl-compatible regular expressions Pcre Matching Algorithms This document describes the two different algorithms that are available in PCRE for matching a compiled regular expression against a given subject string. The "standard" algorithm is the one provided by the pcre_exec(), pcre16_exec() and pcre32_exec() functions. These work in the same as as Perl’s matching function,…