Select the service you want to read about or go back to Base Operating System (BOS) and Extensions.
| DAXPY Subroutine | Computes a constant times a vector plus a vector. |
| DCOPY Subroutine | Copies vector X to Y. |
| DGBMV Subroutine | Performs matrix-vector operations with general banded matrices. |
| DGEMM Subroutine | Performs matrix-matrix operations on general matrices. |
| DGEMV Subroutine | Performs matrix-vector operation with general matrices. |
| DGER Subroutine | Performs the rank 1 operation. |
| DROT Subroutine | Applies a plane rotation. |
| DROTG Subroutine | Constructs Givens plane rotation. |
| DROTM Subroutine | Applies the modified Givens transformation. |
| DROTMG Subroutine | Constructs a modified Givens transformation. |
| DSBMV Subroutine | Performs matrix-vector operations using symmetric band matrix. |
| DSCAL Subroutine | Scales a vector by a constant. |
| DSPMV Subroutine | Performs matrix-vector operations using a packed symmetric matrix. |
| DSPR Subroutine | Performs the symmetric rank 1 operation. |
| DSPR2 Subroutine | Performs the symmetric rank 2 operation. |
| DSWAP Subroutine | Interchanges vectors X and Y. |
| DSYMM Subroutine | Performs matrix-matrix matrix operations on symmetric matrices. |
| DSYMV Subroutine | Performs matrix-vector operations using a symmetric matrix. |
| DSYR Subroutine | Performs the symmetric rank 1 operation. |
| DSYR2 Subroutine | Performs the symmetric rank 2 operation. |
| DSYR2K Subroutine | Performs symmetric rank 2k operations. |
| DSYRK Subroutine | Perform symmetric rank k operations. |
| DTBMV Subroutine | Performs matrix-vector operations using a triangular band matrix. |
| DTBSV Subroutine | Solves system of equations. |
| DTPMV Subroutine | Performs matrix-vector operations on a packed triangular matrix. |
| DTPSV Subroutine | Solves systems of equations. |
| DTRMM Subroutine | Performs matrix-matrix operations on triangular matrices. |
| DTRMV Subroutine | Performs matrix-vector operations using a triangular matrix. |
| DTRSM Subroutine | Solves certain matrix equations. |
| DTRSV Subroutine | Solves system of equations. |
| def_prog_mode Subroutine | Saves/restores the program or shell terminal modes. |
| def_shell_mode Subroutine | Saves/restores the program or shell terminal modes. |
| defssys Subroutine | Initializes the SRCsubsys structure with default values. |
| delay_output Subroutine | Sets the delay output. |
| delch Subroutine | Deletes the character from a window. |
| del_curterm Subroutine | Interfaces to the terminfo database. |
| deleteln Subroutine | Deletes lines in a window. |
| delssys Subroutine | Removes the subsystem objects associated with the SubsystemName parameter. |
| delwin Subroutine | Deletes a window. |
| derwin Subroutine | Window creation subroutines. |
| difftime Subroutine | Converts the formats of date and time representations. |
| dirname Subroutine | Report the parent directory name of a file path name. |
| disclaim Subroutine | Disclaims the content of a memory address range. |
| div Subroutine | Computes absolute value, division, and double precision multiplication of integers. |
| dlclose Subroutine | Closes and unloads a module loaded by the dlopen subroutine. |
| dlerror Subroutine | Return a pointer to information about the last dlopen, dlsym, or dlclose error. |
| dlopen Subroutine | Dynamically load a module into the calling process. |
| dlsym Subroutine | Looks up the location of a symbol in a module that is loaded with dlopen. |
| doupdate Subroutine | Refreshes windows and lines. |
| drand48 Subroutine | Generate uniformly distributed pseudo-random number sequences. |
| drem Subroutine | Computes the IEEE Remainder as defined in the IEEE Floating-Point Standard. |
| dup Subroutine | Controls open file descriptors. |
| dup2 Subroutine | Controls open file descriptors. |
| echo Subroutine | Enables/disables terminal echo. |
| echochar Subroutine | Echos single-byte character and rendition to a window and refreshes the window. |
| ecvt Subroutine | Converts a floating-point number to a string. |
| encrypt Subroutine | Encrypts or decrypts data. |
| endacldb Subroutine | Opens and closes the SMIT ACL database. |
| endfsent Subroutine | Gets information about a file system. |
| endgrent Subroutine | Accesses the basic group information in the user database. |
| endaudithostdb Subroutine | Opens and closes the host identifier auditing file. |
| endpwdb Subroutine | Opens or closes the authentication database. |
| endpwent Subroutine | Accesses the basic user information in the user database. |
| endroledb Subroutine | Opens and closes the role database. |
| endrpcent Subroutine | Accesses the /etc/rpc file. |
| endttyent Subroutine | Gets a tty description file entry. |
| enduserdb Subroutine | Opens and closes the user database. |
| endutent Subroutine | Accesses utmp file entries. |
| endvfsent Subroutine | Gets a vfs file entry. |
| endwin Subroutine | Suspends curses session. |
| erand48 Subroutine | Generate uniformly distributed pseudo-random number sequences. |
| erase Subroutine | Clears a window. |
| erasechar Subroutine | Terminal environment query functions. |
| erasewchar Subroutine | Terminal environment query functions. |
| erf Subroutine | Computes the error and complementary error functions. |
| erfc Subroutine | Computes the error and complementary error functions. |
| erfcl Subroutine | Computes the error and complementary error functions. |
| erfl Subroutine | Computes the error and complementary error functions. |
| errlog Subroutine | Logs an application error to the system error log. |
| exec* Subroutine | Executes a file. |
| _exit Subroutine | Terminates a process. |
| exit Subroutine | Terminates a process. |
| exp Subroutine | Computes exponential, logarithm, and power functions. |
| expl Subroutine | Computes exponential, logarithm, and power functions. |
| expm1 Subroutine | Computes exponential, logarithm, and power functions. |
Go back to Base Operating System (BOS) and Extensions.