Section 3: library functions
asctime, ctime, gmtime, localtime, mktime, asctime_r, ctime_r, gmtime_r, localtime_r – transform date and time to broken-down time or ASCII Synopsis#include <time.h> char *asctime(const struct tm *tm); char *asctime_r(const struct tm *tm, char *buf); char *ctime(const time_t *timep); char *ctime_r(const time_t *timep, char *buf); struct tm *gmtime(const time_t *timep); struct tm *gmtime_r(const time_t *timep, struct tm…
asctime, ctime, gmtime, localtime, mktime, asctime_r, ctime_r, gmtime_r, localtime_r – transform date and time to broken-down time or ASCII Synopsis#include <time.h> char *asctime(const struct tm *tm); char *asctime_r(const struct tm *tm, char *buf); char *ctime(const time_t *timep); char *ctime_r(const time_t *timep, char *buf); struct tm *gmtime(const time_t *timep); struct tm *gmtime_r(const time_t *timep, struct tm…
ctgsyl.f – SynopsisFunctions/Subroutinessubroutine ctgsyl (TRANS, IJOB, M, N, A, LDA, B, LDB, C, LDC, D, LDD, E, LDE, F, LDF, SCALE, DIF, WORK, LWORK, IWORK, INFO) CTGSYL Function/Subroutine Documentationsubroutine ctgsyl (characterTRANS, integerIJOB, integerM, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, complex, dimension( ldc, * )C, integerLDC, complex, dimension( ldd,…
ctgsy2.f – SynopsisFunctions/Subroutinessubroutine ctgsy2 (TRANS, IJOB, M, N, A, LDA, B, LDB, C, LDC, D, LDD, E, LDE, F, LDF, SCALE, RDSUM, RDSCAL, INFO) CTGSY2 solves the generalized Sylvester equation (unblocked algorithm). Function/Subroutine Documentationsubroutine ctgsy2 (characterTRANS, integerIJOB, integerM, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, complex, dimension( ldc, *…
ctgsna.f – SynopsisFunctions/Subroutinessubroutine ctgsna (JOB, HOWMNY, SELECT, N, A, LDA, B, LDB, VL, LDVL, VR, LDVR, S, DIF, MM, M, WORK, LWORK, IWORK, INFO) CTGSNA Function/Subroutine Documentationsubroutine ctgsna (characterJOB, characterHOWMNY, logical, dimension( * )SELECT, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, complex, dimension( ldvl, * )VL, integerLDVL, complex, dimension(…
ctgsja.f – SynopsisFunctions/Subroutinessubroutine ctgsja (JOBU, JOBV, JOBQ, M, P, N, K, L, A, LDA, B, LDB, TOLA, TOLB, ALPHA, BETA, U, LDU, V, LDV, Q, LDQ, WORK, NCYCLE, INFO) CTGSJA Function/Subroutine Documentationsubroutine ctgsja (characterJOBU, characterJOBV, characterJOBQ, integerM, integerP, integerN, integerK, integerL, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, realTOLA, realTOLB,…
ctgsen.f – SynopsisFunctions/Subroutinessubroutine ctgsen (IJOB, WANTQ, WANTZ, SELECT, N, A, LDA, B, LDB, ALPHA, BETA, Q, LDQ, Z, LDZ, M, PL, PR, DIF, WORK, LWORK, IWORK, LIWORK, INFO) CTGSEN Function/Subroutine Documentationsubroutine ctgsen (integerIJOB, logicalWANTQ, logicalWANTZ, logical, dimension( * )SELECT, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, complex, dimension( *…
ctgexc.f – SynopsisFunctions/Subroutinessubroutine ctgexc (WANTQ, WANTZ, N, A, LDA, B, LDB, Q, LDQ, Z, LDZ, IFST, ILST, INFO) CTGEXC Function/Subroutine Documentationsubroutine ctgexc (logicalWANTQ, logicalWANTZ, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, complex, dimension( ldq, * )Q, integerLDQ, complex, dimension( ldz, * )Z, integerLDZ, integerIFST, integerILST, integerINFO)CTGEXC Purpose: CTGEXC reorders…
ctgex2.f – SynopsisFunctions/Subroutinessubroutine ctgex2 (WANTQ, WANTZ, N, A, LDA, B, LDB, Q, LDQ, Z, LDZ, J1, INFO) CTGEX2 swaps adjacent diagonal blocks in an upper (quasi) triangular matrix pair by an unitary equivalence transformation. Function/Subroutine Documentationsubroutine ctgex2 (logicalWANTQ, logicalWANTZ, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, complex, dimension( ldq,…
ctgevc.f – SynopsisFunctions/Subroutinessubroutine ctgevc (SIDE, HOWMNY, SELECT, N, S, LDS, P, LDP, VL, LDVL, VR, LDVR, MM, M, WORK, RWORK, INFO) CTGEVC Function/Subroutine Documentationsubroutine ctgevc (characterSIDE, characterHOWMNY, logical, dimension( * )SELECT, integerN, complex, dimension( lds, * )S, integerLDS, complex, dimension( ldp, * )P, integerLDP, complex, dimension( ldvl, * )VL, integerLDVL, complex, dimension( ldvr, * )VR,…
ctfttr.f – SynopsisFunctions/Subroutinessubroutine ctfttr (TRANSR, UPLO, N, ARF, A, LDA, INFO) CTFTTR copies a triangular matrix from the rectangular full packed format (TF) to the standard full format (TR). Function/Subroutine Documentationsubroutine ctfttr (characterTRANSR, characterUPLO, integerN, complex, dimension( 0: * )ARF, complex, dimension( 0: lda-1, 0: * )A, integerLDA, integerINFO)CTFTTR copies a triangular matrix from the…
ctfttp.f – SynopsisFunctions/Subroutinessubroutine ctfttp (TRANSR, UPLO, N, ARF, AP, INFO) CTFTTP copies a triangular matrix from the rectangular full packed format (TF) to the standard packed format (TP). Function/Subroutine Documentationsubroutine ctfttp (characterTRANSR, characterUPLO, integerN, complex, dimension( 0: * )ARF, complex, dimension( 0: * )AP, integerINFO)CTFTTP copies a triangular matrix from the rectangular full packed format…
ctftri.f – SynopsisFunctions/Subroutinessubroutine ctftri (TRANSR, UPLO, DIAG, N, A, INFO) CTFTRI Function/Subroutine Documentationsubroutine ctftri (characterTRANSR, characterUPLO, characterDIAG, integerN, complex, dimension( 0: * )A, integerINFO)CTFTRI Purpose: CTFTRI computes the inverse of a triangular matrix A stored in RFP format. This is a Level 3 BLAS version of the algorithm. Parameters: TRANSR TRANSR is CHARACTER*1 = ‘N’:…
ctfsm.f – SynopsisFunctions/Subroutinessubroutine ctfsm (TRANSR, SIDE, UPLO, TRANS, DIAG, M, N, ALPHA, A, B, LDB) CTFSM solves a matrix equation (one operand is a triangular matrix in RFP format). Function/Subroutine Documentationsubroutine ctfsm (characterTRANSR, characterSIDE, characterUPLO, characterTRANS, characterDIAG, integerM, integerN, complexALPHA, complex, dimension( 0: * )A, complex, dimension( 0: ldb-1, 0: * )B, integerLDB)CTFSM solves a…
ctermid – get controlling terminal name Synopsis#include <stdio.h> char *ctermid(char *s);Feature Test Macro Requirements for glibc (see feature_test_macros(7)): ctermid(): _POSIX_C_SOURCE Descriptionctermid() returns a string which is the pathname for the current controlling terminal for this process. If s is NULL, a static buffer is used, otherwise s points to a buffer used to hold the…
ctbtrs.f – SynopsisFunctions/Subroutinessubroutine ctbtrs (UPLO, TRANS, DIAG, N, KD, NRHS, AB, LDAB, B, LDB, INFO) CTBTRS Function/Subroutine Documentationsubroutine ctbtrs (characterUPLO, characterTRANS, characterDIAG, integerN, integerKD, integerNRHS, complex, dimension( ldab, * )AB, integerLDAB, complex, dimension( ldb, * )B, integerLDB, integerINFO)CTBTRS Purpose: CTBTRS solves a triangular system of the form A * X = B, A**T * X…
ctbsv.f – SynopsisFunctions/Subroutinessubroutine ctbsv (UPLO, TRANS, DIAG, N, K, A, LDA, X, INCX) CTBSV Function/Subroutine Documentationsubroutine ctbsv (characterUPLO, characterTRANS, characterDIAG, integerN, integerK, complex, dimension(lda,*)A, integerLDA, complex, dimension(*)X, integerINCX)CTBSV Purpose: CTBSV solves one of the systems of equations A*x = b, or A**T*x = b, or A**H*x = b, where b and x are n element…
ctbrfs.f – SynopsisFunctions/Subroutinessubroutine ctbrfs (UPLO, TRANS, DIAG, N, KD, NRHS, AB, LDAB, B, LDB, X, LDX, FERR, BERR, WORK, RWORK, INFO) CTBRFS Function/Subroutine Documentationsubroutine ctbrfs (characterUPLO, characterTRANS, characterDIAG, integerN, integerKD, integerNRHS, complex, dimension( ldab, * )AB, integerLDAB, complex, dimension( ldb, * )B, integerLDB, complex, dimension( ldx, * )X, integerLDX, real, dimension( * )FERR, real, dimension(…
ctbmv.f – SynopsisFunctions/Subroutinessubroutine ctbmv (UPLO, TRANS, DIAG, N, K, A, LDA, X, INCX) CTBMV Function/Subroutine Documentationsubroutine ctbmv (characterUPLO, characterTRANS, characterDIAG, integerN, integerK, complex, dimension(lda,*)A, integerLDA, complex, dimension(*)X, integerINCX)CTBMV Purpose: CTBMV performs one of the matrix-vector operations x := A*x, or x := A**T*x, or x := A**H*x, where x is an n element vector and…
ctbcon.f – SynopsisFunctions/Subroutinessubroutine ctbcon (NORM, UPLO, DIAG, N, KD, AB, LDAB, RCOND, WORK, RWORK, INFO) CTBCON Function/Subroutine Documentationsubroutine ctbcon (characterNORM, characterUPLO, characterDIAG, integerN, integerKD, complex, dimension( ldab, * )AB, integerLDAB, realRCOND, complex, dimension( * )WORK, real, dimension( * )RWORK, integerINFO)CTBCON Purpose: CTBCON estimates the reciprocal of the condition number of a triangular band matrix A,…