SysTutorials Posts

deductionguidesforstd::basic_regex – deductionguidesforstd::basic_regex Synopsis Defined in header <regex> template<class ForwardIt> basic_regex(ForwardIt, ForwardIt, (since C++17) std::regex_constants::syntax_option_type = std::regex_constants::ECMAScript) -> basic_regex<typename std::iterator_traits<ForwardIt>::value_type>; This deduction_guide is provided for std::basic_regex to allow deduction from an iterator range. Example // Run this code   #include <regex>   #include <vector>   int main() {      std::vector<char> v = {‘a’, ‘b’, ‘c’};      std::basic_regex re{v.begin(), v.end()}; //…

deductionguidesforstd::array – deductionguidesforstd::array Synopsis Defined in header <array> template <class T, class… U> (since C++17) array(T, U…) -> array<T, 1 + sizeof…(U)>; One deduction_guide is provided for std::array to provide an equivalent of std::experimental::make_array for construction of std::array from a variadic parameter pack. The program is ill-formed if (std::is_same_v<T, U> && …) is not true…

NAME QuantLib::step_iterator – Iterator advancing in constant steps. SYNOPSIS #include <ql/utilities/steppingiterator.hpp> Inherits boost::iterator_adaptor<step_iterator<Iterator>, Iterator>. Public Member Functions step_iterator (const Iterator &base, Size step) template<class OtherIterator > step_iterator (const step_iterator< OtherIterator > &i, typename boost::enable_if_convertible< OtherIterator, Iterator >::type *=0) Size step () const void increment () void decrement () void advance (typename super_t::difference_type n) super_t::difference_type distance_to…

NAME Functions for Decoding – Modules Configuration keys for the decoder ctl interface. Decoder CTL settings. Functions for decoding You must link to libdaalaadec if you use any of the functions in this section. int daala_decode_header_in (daala_info *info, daala_comment *dc, daala_setup_info **ds, const daala_packet *dp) Parses the header packets from an Ogg Daala stream. daala_dec_ctx…

NAME Configuration keys for the decoder ctl interface. – Decoder CTL settings. Decoder CTL settings. These defines and macros are for altering the behaviour of the decoder through the daala_decode_ctl interface. No keys are currently defined. Author Generated automatically by Doxygen for daala from the source code. Index

Debugging macros – Defines #define QL_TRACE_ENABLE enable tracing #define QL_TRACE_DISABLE disable tracing #define QL_TRACE_ON(out) set tracing stream #define QL_TRACE(message) output tracing information #define QL_TRACE_ENTER_FUNCTION output tracing information #define QL_TRACE_EXIT_FUNCTION output tracing information #define QL_TRACE_LOCATION output tracing information #define QL_TRACE_VARIABLE(variable) output tracing information Detailed Description For debugging purposes, macros can be used to output information about…

ddot.f – Synopsis Functions/Subroutines DOUBLE PRECISION function ddot (N, DX, INCX, DY, INCY) DDOT Function/Subroutine Documentation DOUBLE PRECISION function ddot (integerN, double precision, dimension(*)DX, integerINCX, double precision, dimension(*)DY, integerINCY) DDOT Purpose: DDOT forms the dot product of two vectors. uses unrolled loops for increments equal to one.   Author: Univ. of Tennessee Univ. of California…

ddisna.f – Synopsis Functions/Subroutines subroutine ddisna (JOB, M, N, D, SEP, INFO) DDISNA Function/Subroutine Documentation subroutine ddisna (characterJOB, integerM, integerN, double precision, dimension( * )D, double precision, dimension( * )SEP, integerINFO) DDISNA Purpose: DDISNA computes the reciprocal condition numbers for the eigenvectors of a real symmetric or complex Hermitian matrix or for the left or…

NAME dd_driver – Data descriptors globus_xio uses data descriptors to associate meta data with the data being writen or the data read. Data descriptors flow into the drivers read and write interface functions by way of the operation structure. If the driver is interested in viewing the data decriptor it can request it from the…

dcopy.f – Synopsis Functions/Subroutines subroutine dcopy (N, DX, INCX, DY, INCY) DCOPY Function/Subroutine Documentation subroutine dcopy (integerN, double precision, dimension(*)DX, integerINCX, double precision, dimension(*)DY, integerINCY) DCOPY Purpose: DCOPY copies a vector, x, to a vector, y. uses unrolled loops for increments equal to one.   Author: Univ. of Tennessee Univ. of California Berkeley Univ. of…

NAME ngettext, dngettext, dcngettext – translate message and choose plural form SYNOPSIS #include <libintl.h> char *ngettext(const char *msgid, const char *msgid_plural, unsigned long int n); char *dngettext(const char *domainname, const char *msgid, const char *msgid_plural, unsigned long int n); char *dcngettext(const char *domainname, const char *msgid, const char *msgid_plural, unsigned long int n, int category);…

NAME gettext, dgettext, dcgettext – translate message SYNOPSIS #include <libintl.h> char *gettext(const char *msgid); char *dgettext(const char *domainname, const char *msgid); char *dcgettext(const char *domainname, const char *msgid, int category); DESCRIPTION The gettext, dgettext and dcgettext functions attempt to translate a text string into the user’s native language, by looking up the translation in a…

dcabs1.f – Synopsis Functions/Subroutines DOUBLE PRECISION function dcabs1 (Z) DCABS1 Function/Subroutine Documentation DOUBLE PRECISION function dcabs1 (complex*16Z) DCABS1 Purpose: DCABS1 computes absolute value of a double complex number   Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: November 2011 Definition at line 40 of file dcabs1.f. Author Generated…

NAME QuantLib::FuturesConvAdjustmentQuote – quote for the futures-convexity adjustment of an index SYNOPSIS #include <ql/quotes/futuresconvadjustmentquote.hpp> Inherits QuantLib::Quote, and QuantLib::Observer. Public Member Functions FuturesConvAdjustmentQuote (const boost::shared_ptr< IborIndex > &index, const Date &futuresDate, const Handle< Quote > &futuresQuote, const Handle< Quote > &volatility, const Handle< Quote > &meanReversion) FuturesConvAdjustmentQuote (const boost::shared_ptr< IborIndex > &index, const std::string &immCode, const…

NAME dbzinit, dbzfresh, dbzagain, dbzclose, dbzexists, dbzfetch, dbzstore, dbzsync, dbzsize, dbzgetoptions, dbzsetoptions, dbzdebug – database routines SYNOPSIS #include <inn/dbz.h> bool dbzinit(const char *base) bool dbzclose(void) bool dbzfresh(const char *base, long size) bool dbzagain(const char *base, const char *oldbase) bool dbzexists(const HASH key) off_t dbzfetch(const HASH key) bool dbzfetch(const HASH key, void *ivalue) DBZSTORE_RESULT dbzstore(const HASH…

NAME dbopen – database access methods SYNOPSIS #include <db.h> #include <fcntl.h> #include <limits.h> #include <sys/types.h> DB *dbopen(const char *file, int flags, int mode, DBTYPE type, const void *openinfo); DESCRIPTION Note well: This page documents interfaces provided in glibc up until version 2.1. Since version 2.2, glibc no longer provides these interfaces. Probably, you are looking…

NAME dblink_send_query – sends an async query to a remote database SYNOPSIS dblink_send_query(text connname, text sql) returns int DESCRIPTION dblink_send_query sends a query to be executed asynchronously, that is, without immediately waiting for the result. There must not be an async query already in progress on the connection. After successfully dispatching an async query, completion…

getlogin, getlogin_r, cuserid – get username Synopsis #include <unistd.h> char *getlogin(void); int getlogin_r(char *buf, size_t bufsize); #include <stdio.h> char *cuserid(char *string); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): getlogin_r(): _POSIX_C_SOURCE >= 199506L cuserid(): Since glibc 2.24: (_XOPEN_SOURCE && ! (_POSIX_C_SOURCE >= 200112L) || _GNU_SOURCE Up to and including glibc 2.23: _XOPEN_SOURCE Description getlogin() returns a pointer…

dblink_open – opens a cursor in a remote database Synopsis dblink_open(text cursorname, text sql [, bool fail_on_error]) returns text dblink_open(text connname, text cursorname, text sql [, bool fail_on_error]) returns text Description dblink_open() opens a cursor in a remote database. The cursor can subsequently be manipulated with dblink_fetch() and dblink_close(). Arguments connname Name of the connection…

NAME dblink_open – opens a cursor in a remote database SYNOPSIS dblink_open(text cursorname, text sql[, bool fail_on_error]) returns text dblink_open(text connname, text cursorname, text sql[, bool fail_on_error]) returns text DESCRIPTION dblink_open() opens a cursor in a remote database. The cursor can subsequently be manipulated with dblink_fetch() and dblink_close(). ARGUMENTS connname Name of the connection to…