Section 3: library functions
QuantLib::Period – Synopsis #include <ql/time/period.hpp> Public Member Functions Period (Integer n, TimeUnit units) Period (Frequency f) Integer length () const TimeUnit units () const Frequency frequency () const Period & operator+= (const Period &) Period & operator-= (const Period &) Period & operator/= (Integer) void normalize () Related Functions (Note that these are not member…
wdb_keys Synopsis #include <util/wdb.h> NEOERR * wdb_keys (WDB *wdb, char **primary_key, ULIST **data); Arguments wdb – open database Description this function returns the key and column names for the current database Return Value primary_key – pointer to the primary key data – pointer to a ULIST of the columns. both of these are allocated structures,…
wcwidth – determine columns needed for a wide character Synopsis #define _XOPEN_SOURCE /* See feature_test_macros(7) */ #include <wchar.h> int wcwidth(wchar_t c); Description The wcwidth() function returns the number of columns needed to represent the wide character c. If c is a printable wide character, the value is at least 0. If c is null wide…
wctype – wide-character classification Synopsis #include <wctype.h> wctype_t wctype(const char *name); Description The wctype_t type represents a property which a wide character may or may not have. In other words, it represents a class of wide characters. This type’s nature is implementation-dependent, but the special value (wctype_t) 0 denotes an invalid property. Nonzero wctype_t values…
wctrans – wide-character translation mapping Synopsis #include <wctype.h> wctrans_t wctrans(const char *name); Description The wctrans_t type represents a mapping which can map a wide character to another wide character. Its nature is implementation-dependent, but the special value (wctrans_t) 0 denotes an invalid mapping. Nonzero wctrans_t values can be passed to the towctrans(3) function to actually perform…
wctomb – convert a wide character to a multibyte sequence Synopsis #include <stdlib.h> int wctomb(char *s, wchar_t wc); Description If s is not NULL, the wctomb() function converts the wide character wc to its multibyte representation and stores it at the beginning of the character array pointed to by s. It updates the shift state,…
wctob – try to represent a wide character as a single byte Synopsis #include <wchar.h> int wctob(wint_t c); Description The wctob() function tests whether the multibyte representation of the wide character c, starting in the initial state, consists of a single byte. If so, it is returned as an unsigned char. Never use this function….
wcswidth – determine columns needed for a fixed-size wide-character string Synopsis #define _XOPEN_SOURCE /* See feature_test_macros(7) */ #include <wchar.h> int wcswidth(const wchar_t *s, size_t n); Description The wcswidth() function returns the number of columns needed to represent the wide-character string pointed to by s, but at most n wide characters. If a nonprintable wide character…
wcstoimax, wcstoumax – convert wide-character string to integer Synopsis #include <inttypes.h> #include <stddef.h> intmax_t wcstoimax(const wchar_t *nptr, wchar_t **endptr, int base); uintmax_t wcstoumax(const wchar_t *nptr, wchar_t **endptr, int base); Description These functions are just like wcstol(3) and wcstoul(3), except that they return a value of type intmax_t and uintmax_t, respectively. Attributes For an explanation of…
wcstombs – convert a wide-character string to a multibyte string Synopsis #include <stdlib.h> size_t wcstombs(char *dest, const wchar_t *src, size_t n); Description If dest is not NULL, the wcstombs() function converts the wide-character string src to a multibyte string starting at dest. At most n bytes are written to dest. The sequence of characters placed…
wcstok – split wide-character string into tokens Synopsis #include <wchar.h> wchar_t *wcstok(wchar_t *wcs, const wchar_t *delim, wchar_t **ptr); Description The wcstok() function is the wide-character equivalent of the strtok(3) function, with an added argument to make it multithread-safe. It can be used to split a wide-character string wcs into tokens, where a token is defined…
wcstoimax, wcstoumax – convert wide-character string to integer Synopsis #include <inttypes.h> #include <stddef.h> intmax_t wcstoimax(const wchar_t *nptr, wchar_t **endptr, int base); uintmax_t wcstoumax(const wchar_t *nptr, wchar_t **endptr, int base); Description These functions are just like wcstol(3) and wcstoul(3), except that they return a value of type intmax_t and uintmax_t, respectively. Attributes For an explanation of…
wcsstr – locate a substring in a wide-character string Synopsis #include <wchar.h> wchar_t *wcsstr(const wchar_t *haystack, const wchar_t *needle); Description The wcsstr() function is the wide-character equivalent of the strstr(3) function. It searches for the first occurrence of the wide-character string needle (without its terminating null wide character (L’
wcsspn – advance in a wide-character string, skipping any of a set of wide characters Synopsis #include <wchar.h> size_t wcsspn(const wchar_t *wcs, const wchar_t *accept); Description The wcsspn() function is the wide-character equivalent of the strspn(3) function. It determines the length of the longest initial segment of wcs which consists entirely of wide-characters listed in…
wcsrtombs – convert a wide-character string to a multibyte string Synopsis #include <wchar.h> size_t wcsrtombs(char *dest, const wchar_t **src, size_t len, mbstate_t *ps); Description If dest is not NULL, the wcsrtombs() function converts the wide-character string *src to a multibyte string starting at dest. At most len bytes are written to dest. The shift state…
wcsrchr – search a wide character in a wide-character string Synopsis #include <wchar.h> wchar_t *wcsrchr(const wchar_t *wcs, wchar_t wc); Description The wcsrchr() function is the wide-character equivalent of the strrchr(3) function. It searches the last occurrence of wc in the wide-character string pointed to by wcs. Return Value The wcsrchr() function returns a pointer to…
wcspbrk – search a wide-character string for any of a set of wide characters Synopsis #include <wchar.h> wchar_t *wcspbrk(const wchar_t *wcs, const wchar_t *accept); Description The wcspbrk() function is the wide-character equivalent of the strpbrk(3) function. It searches for the first occurrence in the wide-character string pointed to by wcs of any of the characters…
wcsnrtombs – convert a wide-character string to a multibyte string Synopsis #include <wchar.h> size_t wcsnrtombs(char *dest, const wchar_t **src, size_t nwc, size_t len, mbstate_t *ps); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): wcsnrtombs(): Since glibc 2.10: _POSIX_C_SOURCE >= 200809L Before glibc 2.10: _GNU_SOURCE Description The wcsnrtombs() function is like the wcsrtombs(3) function, except that the number…
wcsnlen – determine the length of a fixed-size wide-character string Synopsis #include <wchar.h> size_t wcsnlen(const wchar_t *s, size_t maxlen); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): wcsnlen(): Since glibc 2.10: _POSIX_C_SOURCE >= 200809L Before glibc 2.10: _GNU_SOURCE Description The wcsnlen() function is the wide-character equivalent of the strnlen(3) function. It returns the number of wide-characters in…
wcsncpy – copy a fixed-size string of wide characters Synopsis #include <wchar.h> wchar_t *wcsncpy(wchar_t *dest, const wchar_t *src, size_t n); Description The wcsncpy() function is the wide-character equivalent of the strncpy(3) function. It copies at most n wide characters from the wide-character string pointed to by src, including the terminating null wide character (L’