Section 3: library functions
qwtchangelog – What’s new in Qwt 6.1 New plot items • QwtPlotBarChart Bar chart, see ‘examples/distrowatch’ • QwtPlotMultiBarChart Chart of grouped bars – stacked or aligned side by side. See ‘examples/barchart’ • QwtPlotTradingCurve Candlestick or OHLC charts typically used to describe price movements over time. See ‘examples/stockchart’ • QwtPlotShapeItem A plot item to display rectangles, circles, polygons and…
QuantLib::QuantoBarrierOption – Quanto version of a barrier option. Synopsis #include <ql/instruments/quantobarrieroption.hpp> Inherits QuantLib::BarrierOption. Public Types typedef BarrierOption::arguments arguments typedef QuantoOptionResults< BarrierOption::results > results Public Member Functions QuantoBarrierOption (Barrier::Type barrierType, Real barrier, Real rebate, const boost::shared_ptr< StrikedTypePayoff > &payoff, const boost::shared_ptr< Exercise > &exercise) void fetchResults (const PricingEngine::results *) const greeks Real qvega () const Real…
QuantLib::CommodityIndex – base class for commodity indexes Synopsis const CommodityType & commodityType () const const Currency & currency () const const UnitOfMeasure & unitOfMeasure () const const Calendar & calendar () const const boost::shared_ptr< CommodityCurve > & forwardCurve () const Real lotQuantity () const Real price (const Date &date) Real forwardPrice (const Date &date) const…
QuantLib::CommodityIndex – base class for commodity indexes Synopsis const CommodityType & commodityType () const const Currency & currency () const const UnitOfMeasure & unitOfMeasure () const const Calendar & calendar () const const boost::shared_ptr< CommodityCurve > & forwardCurve () const Real lotQuantity () const Real price (const Date &date) Real forwardPrice (const Date &date) const…
QuantLib::BootstrapHelper – Base helper class for bootstrapping. Synopsis Real quoteError () const Real quoteValue () const bool quoteIsValid () const virtual Real impliedQuote () const =0 virtual void setTermStructure (TS *) sets the term structure to be used for pricing virtual Date earliestDate () const earliest relevant date virtual Date latestDate () const latest relevant…
QuantLib::BootstrapHelper – Base helper class for bootstrapping. Synopsis Real quoteError () const Real quoteValue () const bool quoteIsValid () const virtual Real impliedQuote () const =0 virtual void setTermStructure (TS *) sets the term structure to be used for pricing virtual Date earliestDate () const earliest relevant date virtual Date latestDate () const latest relevant…
QuantLib::BootstrapHelper – Base helper class for bootstrapping. Synopsis Real quoteError () const Real quoteValue () const bool quoteIsValid () const virtual Real impliedQuote () const =0 virtual void setTermStructure (TS *) sets the term structure to be used for pricing virtual Date earliestDate () const earliest relevant date virtual Date latestDate () const latest relevant…
QuantLib::BootstrapHelper – Base helper class for bootstrapping. Synopsis Real quoteError () const Real quoteValue () const bool quoteIsValid () const virtual Real impliedQuote () const =0 virtual void setTermStructure (TS *) sets the term structure to be used for pricing virtual Date earliestDate () const earliest relevant date virtual Date latestDate () const latest relevant…
quorum_trackstop – Disable callbacks notification. Synopsis #include <corosync/quorum.h> int quorum_trackstart(quorum_handle_t *handle); Description The quorum_trackstop function is used to disable callbacks notification from the quorum API. Return Value This call returns the CS_OK value if successful, otherwise an error is returned. Errors CS_ERR_TRY_AGAIN Resource temporarily unavailable CS_ERR_INVALID_PARAM Invalid argument CS_ERR_ACCESS Permission denied CS_ERR_LIBRARY The connection failed…
quorum_trackstart – Enable callbacks notification. Synopsis #include <corosync/quorum.h> int quorum_trackstart(quorum_handle_t *handle, unsigned int flags); Description The quorum_trackstart function is used to enable callbacks notification from the quorum API. Every time the voting configuraton changes (eg a node joins or leave the cluster) or the quorum status change, the notification is queued. The notification is dispatched…
quorum_initialize – Create a new connection to the Quorum service Synopsis #include <corosync/quorum.h> int quorum_initialize(quorum_handle_t *handle, quorum_callbacks_t *callbacks, uint32_t *quorum_type); Description The quorum_initialize function is used to initialize a connection to the quorum API. Each application may have several connections to the quorum API. Each application uses the handle argument to uniquely identify the connection….
quorum_getquorate – Gets the quorate status of the node. Synopsis #include <corosync/quorum.h> int quorum_getquorate(quorum_handle_t handle, int *quorate); Description The quorum_getquorate function is used to retrieve the quorate status of the node. quorate is 0 if the node is not part of a quorate partition or 1 otherwise. Return Value This call returns the CS_OK value…
quorum_finalize – Terminate a connection to the quorum service Synopsis #include <corosync/quorum.h> int quorum_finalize(quorum_handle_t handle); Description The quorum_finalize function is used to close a connection to the quorum API. Once the connection is finalized, the handle may not be used again by applications. No more callbacks will be dispatched from the quorum_dispatch function. Return Value…
quorum_fd_get – Dispatches callbacks from the quorum service Synopsis #include <corosync/quorum.h> int quorum_fd_get(quorum_handle_t handle, int *fd); Description The quorum_fd_get function is used to retrieve the file descriptor that may be used with the poll system call to determine when quorum_dispatch(3) won’t block. The handle argument may not be used directly with poll because it is…
quorum_dispatch – Dispatches callbacks from the quorum service Synopsis #include <corosync/quorum.h> int quorum_dispatch(quorum_handle_t handle, cs_dispatch_flags_t *dispatch_types); Description The quorum_dispatch function is used to dispatch configuration changes. Each application may have several connections to the quorum API. Each application uses the handle argument to uniquely identify the connection. The dispatch_types argument is used to identify the…
quorum_context_set – Sets the context variable for a QUORUM instance Synopsis #include <corosync/quorum.h> int quorum_context_set(quorum_handle_t handle, void *context); Description The quorum_context_set function is used to set the context variable for a quorum instance. It has no meaning insire libquorum itself and will not be touched by the library. It can be retrieved using quorum_context_get(3) Return…
quorum_context_get – Gets the context variable for a QUORUM instance Synopsis #include <corosync/quorum.h> int quorum_context_get(quorum_handle_t handle, void **context); Description The quorum_context_get function is used to retrieve the context variable previously stored using quorum_context_set(3) Return Value This call returns the CS_OK value if successful, otherwise an error is returned. Errors CS_ERR_TRY_AGAIN Resource temporarily unavailable CS_ERR_INVALID_PARAM Invalid…
queue – implementations of linked lists and queues Description The <sys/queue.h> header file provides a set of macros that define and operate on the following data structures: * singly linked lists (SLIST) * doubly linked lists (LIST) * singly linked tail queues (STAILQ) * doubly linked tail queues (TAILQ) * doubly linked circular queues (CIRCLEQ)…
get_ordered_context_list, get_ordered_context_list_with_level, get_default_context, get_default_context_with_level, get_default_context_with_role, get_default_context_with_rolelevel, query_user_context, manual_user_enter_context, get_default_role – determine SELinux context(s) for user sessions Synopsis #include <selinux/selinux.h> #include <selinux/get_context_list.h> int get_ordered_context_list(const char *user, char *fromcon, char ***list); int get_ordered_context_list_with_level(const char *user, const char *level, char *fromcon, char ***list); int get_default_context(const char *user, char *fromcon, char **newcon); int get_default_context_with_level(const char *user, const char *level,…
quat_slerp – Version of quat_interpolate() allowing control over the rotation. Allegro game programming library. Synopsis #include <allegro.h> void quat_slerp(const QUAT *from, const QUAT *to, float t, QUAT *out, int how); Description The same as quat_interpolate(), but allows more control over how the rotation is done. The how parameter can be any one of the values:…