SysTutorials Posts

NAME flockfile, ftrylockfile, funlockfile – lock FILE for stdio SYNOPSIS #include <stdio.h> void flockfile(FILE *filehandle); int ftrylockfile(FILE *filehandle); void funlockfile(FILE *filehandle); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): All functions shown above: /* Since glibc 2.24: */ _POSIX_C_SOURCE >= 199309L     || /* Glibc versions <= 2.23: */ _POSIX_C_SOURCE     || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE DESCRIPTION The stdio functions are thread-safe. This is achieved by assigning…

NAME ftok – convert a pathname and a project identifier to a System V IPC key SYNOPSIS #include <sys/ipc.h> #include <sys/types.h> key_t ftok(const char *pathname, int proj_id); DESCRIPTION The ftok() function uses the identity of the file named by the given pathname (which must refer to an existing, accessible file) and the least significant 8…

NAME ftofix – Converts a floating point value to fixed point. Allegro game programming library. SYNOPSIS #include <allegro.h> fixed ftofix(double x); DESCRIPTION Converts a floating point value to fixed point. Unlike itofix(), this function clamps values which could overflow the type conversion, setting `errno’ to ERANGE in the process if this happens. Example: fixed number;…

NAME ftime – return date and time SYNOPSIS #include <sys/timeb.h> int ftime(struct timeb *tp); DESCRIPTION NOTE: This function is deprecated, and will be removed in a future version of the GNU C library. Use clock_gettime(2) instead. This function returns the current time as seconds and milliseconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC). The time…

NAME fseeko, ftello – seek to or report file position SYNOPSIS #include <stdio.h> int fseeko(FILE *stream, off_t offset, int whence); off_t ftello(FILE *stream); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): fseeko(), ftello(): _FILE_OFFSET_BITS == 64 || _POSIX_C_SOURCE >= 200112L (defining the obsolete _LARGEFILE_SOURCE macro also works) DESCRIPTION The fseeko() and ftello() functions are identical to fseek(3) and ftell(3)…

NAME fgetpos, fseek, fsetpos, ftell, rewind – reposition a stream SYNOPSIS #include <stdio.h> int fseek(FILE *stream, long offset, int whence); long ftell(FILE *stream); void rewind(FILE *stream); int fgetpos(FILE *stream, fpos_t *pos); int fsetpos(FILE *stream, const fpos_t *pos); DESCRIPTION The fseek() function sets the file position indicator for the stream pointed to by stream. The new…

NAME fstrcolli – fuzzy comparison of two strings using the current locale SYNOPSIS #include <fstrcmp.h> #define FSTRCMP_IDENTICAL #define FSTRCMP_THRESHOLD #define FSTRCMP_ERROR int fstrcolli(const char *string1, const char *string2); DESCRIPTION The strcolli() function compares the two strings sting1 and string2. The comparison is based on strings interpreted as appropriate for the program’s current locale for category…

NAME fstrcoll – fuzzy comparison of two strings using the current locale SYNOPSIS #include <fstrcmp.h> #define FSTRCMP_IDENTICAL #define FSTRCMP_THRESHOLD #define FSTRCMP_ERROR double fstrcoll(const char *string1, const char *string2); DESCRIPTION The strcoll() function compares the two strings sting1 and string2. The comparison is based on strings interpreted as appropriate for the program’s current locale for category…

NAME fstrcmpi – fuzzy comparison of two strings SYNOPSIS #include <fstrcmp.h> #define FSTRCMPI_IDENTICAL #define FSTRCMPI_THRESHOLD #define FSTRCMPI_ERROR int fstrcmpi(const char *string1, const char *string2); DESCRIPTION The fstrcmpi() function compares the two strings, string1 and string2. RETURN VALUE The fstrcmpi function returns an int value between 0 and FSTRCMPI_IDENTICAL. A value of 0 means the strings…

NAME fstrcmp – fuzzy comparison of two strings SYNOPSIS #include <fstrcmp.h> #define FSTRCMP_IDENTICAL #define FSTRCMP_THRESHOLD #define FSTRCMP_ERROR double fstrcmp(const char *string1, const char *string2); DESCRIPTION The fstrcmp() function compares the two strings, string1 and string2. RETURN VALUE The fstrcmp function returns a floating point value between 0.0 and FSTRCMP_IDENTICAL. A value of 0.0 means the…

NAME fstrcasecmpi – fuzzy comparison of two strings ignoring case SYNOPSIS #include <fstrcmp.h> #define FSTRCMP_IDENTICAL #define FSTRCMP_THRESHOLD #define FSTRCMP_ERROR int fstrcasecmpi(const char *string1, const char *string2); DESCRIPTION The fstrcmp() function compares the two strings, string1 and string2, ignoring case. RETURN VALUE The fstrcasecmpi function returns an int value between 0 and FSTRCMPI_IDENTICAL. A value of…

NAME fstrcasecmp – fuzzy comparison of two strings ignoring case SYNOPSIS #include <fstrcmp.h> #define FSTRCMP_IDENTICAL #define FSTRCMP_THRESHOLD #define FSTRCMP_ERROR double fstrcasecmp(const char *string1, const char *string2); DESCRIPTION The fstrcmp() function compares the two strings, string1 and string2, ignoring case. RETURN VALUE The fstrcasecmp function returns a floating point value between 0.0 and FSTRCMP_IDENTICAL. A value…

NAME statvfs, fstatvfs – get filesystem statistics SYNOPSIS #include <sys/statvfs.h> int statvfs(const char *path, struct statvfs *buf); int fstatvfs(int fd, struct statvfs *buf); DESCRIPTION The function statvfs() returns information about a mounted filesystem. path is the pathname of any file within the mounted filesystem. buf is a pointer to a statvfs structure defined approximately as…

NAME fgetpos, fseek, fsetpos, ftell, rewind – reposition a stream SYNOPSIS #include <stdio.h> int fseek(FILE *stream, long offset, int whence); long ftell(FILE *stream); void rewind(FILE *stream); int fgetpos(FILE *stream, fpos_t *pos); int fsetpos(FILE *stream, const fpos_t *pos); DESCRIPTION The fseek() function sets the file position indicator for the stream pointed to by stream. The new…

NAME setfilecon, fsetfilecon, lsetfilecon – set SELinux security context of a file SYNOPSIS #include <selinux/selinux.h> int setfilecon(const char *path, char *con); int setfilecon_raw(const char *path, char *con); int lsetfilecon(const char *path, char *con); int lsetfilecon_raw(const char *path, char *con); int fsetfilecon(int fd, char *con); int fsetfilecon_raw(int fd, char *con); DESCRIPTION setfilecon() sets the security context…

NAME setfilecon, fsetfilecon, lsetfilecon – set SELinux security context of a file SYNOPSIS #include <selinux/selinux.h> int setfilecon(const char *path, char *con); int setfilecon_raw(const char *path, char *con); int lsetfilecon(const char *path, char *con); int lsetfilecon_raw(const char *path, char *con); int fsetfilecon(int fd, char *con); int fsetfilecon_raw(int fd, char *con); DESCRIPTION setfilecon() sets the security context…

NAME fseeko, ftello – seek to or report file position SYNOPSIS #include <stdio.h> int fseeko(FILE *stream, off_t offset, int whence); off_t ftello(FILE *stream); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): fseeko(), ftello(): _FILE_OFFSET_BITS == 64 || _POSIX_C_SOURCE >= 200112L (defining the obsolete _LARGEFILE_SOURCE macro also works) DESCRIPTION The fseeko() and ftello() functions are identical to fseek(3) and ftell(3)…

NAME fgetpos, fseek, fsetpos, ftell, rewind – reposition a stream SYNOPSIS #include <stdio.h> int fseek(FILE *stream, long offset, int whence); long ftell(FILE *stream); void rewind(FILE *stream); int fgetpos(FILE *stream, fpos_t *pos); int fsetpos(FILE *stream, const fpos_t *pos); DESCRIPTION The fseek() function sets the file position indicator for the stream pointed to by stream. The new…

NAME scanf, fscanf, sscanf, vscanf, vsscanf, vfscanf – input format conversion SYNOPSIS #include <stdio.h> int scanf(const char *format, …); int fscanf(FILE *stream, const char *format, …); int sscanf(const char *str, const char *format, …); #include <stdarg.h> int vscanf(const char *format, va_list ap); int vsscanf(const char *str, const char *format, va_list ap); int vfscanf(FILE *stream, const…

NAME QuantLib::LazyObject – Framework for calculation on demand and result caching. SYNOPSIS #include <ql/patterns/lazyobject.hpp> Inherits QuantLib::Observable, and QuantLib::Observer. Inherited by AbcdAtmVolCurve, CapFloorTermVolCurve, CapFloorTermVolSurface, CmsMarket, EurodollarFuturesImpliedStdDevQuote, FdmBlackScholesSolver [private], FdmHestonSolver [private], FittedBondDiscountCurve, FlatForward, ForwardSwapQuote, ImpliedStdDevQuote, Instrument, InterpolatedSmileSection< Interpolator >, OneFactorCopula, PiecewiseDefaultCurve< Traits, Interpolator, Bootstrap >, PiecewiseYieldCurve< Traits, Interpolator, Bootstrap >, PiecewiseYoYInflationCurve< Interpolator, Bootstrap, Traits >, PiecewiseZeroInflationCurve< Interpolator,…