Section 3: library functions
sspevd.f – Synopsis Functions/Subroutines subroutine sspevd (JOBZ, UPLO, N, AP, W, Z, LDZ, WORK, LWORK, IWORK, LIWORK, INFO) SSPEVD computes the eigenvalues and, optionally, the left and/or right eigenvectors for OTHER matrices Function/Subroutine Documentation subroutine sspevd (characterJOBZ, characterUPLO, integerN, real, dimension( * )AP, real, dimension( * )W, real, dimension( ldz, * )Z, integerLDZ, real, dimension(…
sspev.f – Synopsis Functions/Subroutines subroutine sspev (JOBZ, UPLO, N, AP, W, Z, LDZ, WORK, INFO) SSPEV computes the eigenvalues and, optionally, the left and/or right eigenvectors for OTHER matrices Function/Subroutine Documentation subroutine sspev (characterJOBZ, characterUPLO, integerN, real, dimension( * )AP, real, dimension( * )W, real, dimension( ldz, * )Z, integerLDZ, real, dimension( * )WORK, integerINFO)…
sspcon.f – Synopsis Functions/Subroutines subroutine sspcon (UPLO, N, AP, IPIV, ANORM, RCOND, WORK, IWORK, INFO) SSPCON Function/Subroutine Documentation subroutine sspcon (characterUPLO, integerN, real, dimension( * )AP, integer, dimension( * )IPIV, realANORM, realRCOND, real, dimension( * )WORK, integer, dimension( * )IWORK, integerINFO) SSPCON Purpose: SSPCON estimates the reciprocal of the condition number (in the 1-norm) of…
system_data_types – overview of system data types Description aiocb Include: <aio.h>. struct aiocb { int aio_fildes; /* File descriptor */ off_t aio_offset; /* File offset */ volatile void *aio_buf; /* Location of buffer */ size_t aio_nbytes; /* Length of transfer */ int aio_reqprio; /* Request priority offset */ struct sigevent aio_sigevent; /* Signal number and…
gsignal, ssignal – software signal facility Synopsis #include <signal.h> typedef void (*sighandler_t)(int); int gsignal(int signum); sighandler_t ssignal(int signum, sighandler_t action); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): gsignal(), ssignal(): Since glibc 2.19: _DEFAULT_SOURCE Glibc 2.19 and earlier: _SVID_SOURCE Description Don’t use these functions under Linux. Due to a historical mistake, under Linux these functions…
ssfrk.f – Synopsis Functions/Subroutines subroutine ssfrk (TRANSR, UPLO, TRANS, N, K, ALPHA, A, LDA, BETA, C) SSFRK performs a symmetric rank-k operation for matrix in RFP format. Function/Subroutine Documentation subroutine ssfrk (characterTRANSR, characterUPLO, characterTRANS, integerN, integerK, realALPHA, real, dimension( lda, * )A, integerLDA, realBETA, real, dimension( * )C) SSFRK performs a symmetric rank-k operation for…
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 char…
sscal.f – Synopsis Functions/Subroutines subroutine sscal (N, SA, SX, INCX) SSCAL Function/Subroutine Documentation subroutine sscal (integerN, realSA, real, dimension(*)SX, integerINCX) SSCAL Purpose: scales a vector by a constant. uses unrolled loops for increment equal to 1. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: November 2011 Further…
ssbtrd.f – Synopsis Functions/Subroutines subroutine ssbtrd (VECT, UPLO, N, KD, AB, LDAB, D, E, Q, LDQ, WORK, INFO) SSBTRD Function/Subroutine Documentation subroutine ssbtrd (characterVECT, characterUPLO, integerN, integerKD, real, dimension( ldab, * )AB, integerLDAB, real, dimension( * )D, real, dimension( * )E, real, dimension( ldq, * )Q, integerLDQ, real, dimension( * )WORK, integerINFO) SSBTRD Purpose: SSBTRD…
ssbmv.f – Synopsis Functions/Subroutines subroutine ssbmv (UPLO, N, K, ALPHA, A, LDA, X, INCX, BETA, Y, INCY) SSBMV Function/Subroutine Documentation subroutine ssbmv (characterUPLO, integerN, integerK, realALPHA, real, dimension(lda,*)A, integerLDA, real, dimension(*)X, integerINCX, realBETA, real, dimension(*)Y, integerINCY) SSBMV Purpose: SSBMV performs the matrix-vector operation y := alpha*A*x + beta*y, where alpha and beta are scalars, x…
ssbgvx.f – Synopsis Functions/Subroutines subroutine ssbgvx (JOBZ, RANGE, UPLO, N, KA, KB, AB, LDAB, BB, LDBB, Q, LDQ, VL, VU, IL, IU, ABSTOL, M, W, Z, LDZ, WORK, IWORK, IFAIL, INFO) SSBGST Function/Subroutine Documentation subroutine ssbgvx (characterJOBZ, characterRANGE, characterUPLO, integerN, integerKA, integerKB, real, dimension( ldab, * )AB, integerLDAB, real, dimension( ldbb, * )BB, integerLDBB, real,…
ssbgvd.f – Synopsis Functions/Subroutines subroutine ssbgvd (JOBZ, UPLO, N, KA, KB, AB, LDAB, BB, LDBB, W, Z, LDZ, WORK, LWORK, IWORK, LIWORK, INFO) SSBGST Function/Subroutine Documentation subroutine ssbgvd (characterJOBZ, characterUPLO, integerN, integerKA, integerKB, real, dimension( ldab, * )AB, integerLDAB, real, dimension( ldbb, * )BB, integerLDBB, real, dimension( * )W, real, dimension( ldz, * )Z, integerLDZ,…
ssbgv.f – Synopsis Functions/Subroutines subroutine ssbgv (JOBZ, UPLO, N, KA, KB, AB, LDAB, BB, LDBB, W, Z, LDZ, WORK, INFO) SSBGST Function/Subroutine Documentation subroutine ssbgv (characterJOBZ, characterUPLO, integerN, integerKA, integerKB, real, dimension( ldab, * )AB, integerLDAB, real, dimension( ldbb, * )BB, integerLDBB, real, dimension( * )W, real, dimension( ldz, * )Z, integerLDZ, real, dimension( *…
ssbgst.f – Synopsis Functions/Subroutines subroutine ssbgst (VECT, UPLO, N, KA, KB, AB, LDAB, BB, LDBB, X, LDX, WORK, INFO) SSBGST Function/Subroutine Documentation subroutine ssbgst (characterVECT, characterUPLO, integerN, integerKA, integerKB, real, dimension( ldab, * )AB, integerLDAB, real, dimension( ldbb, * )BB, integerLDBB, real, dimension( ldx, * )X, integerLDX, real, dimension( * )WORK, integerINFO) SSBGST Purpose: SSBGST…
ssbevx.f – Synopsis Functions/Subroutines subroutine ssbevx (JOBZ, RANGE, UPLO, N, KD, AB, LDAB, Q, LDQ, VL, VU, IL, IU, ABSTOL, M, W, Z, LDZ, WORK, IWORK, IFAIL, INFO) SSBEVX computes the eigenvalues and, optionally, the left and/or right eigenvectors for OTHER matrices Function/Subroutine Documentation subroutine ssbevx (characterJOBZ, characterRANGE, characterUPLO, integerN, integerKD, real, dimension( ldab, *…
ssbevd.f – Synopsis Functions/Subroutines subroutine ssbevd (JOBZ, UPLO, N, KD, AB, LDAB, W, Z, LDZ, WORK, LWORK, IWORK, LIWORK, INFO) SSBEVD computes the eigenvalues and, optionally, the left and/or right eigenvectors for OTHER matrices Function/Subroutine Documentation subroutine ssbevd (characterJOBZ, characterUPLO, integerN, integerKD, real, dimension( ldab, * )AB, integerLDAB, real, dimension( * )W, real, dimension( ldz,…
ssbev.f – Synopsis Functions/Subroutines subroutine ssbev (JOBZ, UPLO, N, KD, AB, LDAB, W, Z, LDZ, WORK, INFO) SSBEV computes the eigenvalues and, optionally, the left and/or right eigenvectors for OTHER matrices Function/Subroutine Documentation subroutine ssbev (characterJOBZ, characterUPLO, integerN, integerKD, real, dimension( ldab, * )AB, integerLDAB, real, dimension( * )W, real, dimension( ldz, * )Z, integerLDZ,…
srscl.f – Synopsis Functions/Subroutines subroutine srscl (N, SA, SX, INCX) SRSCL multiplies a vector by the reciprocal of a real scalar. Function/Subroutine Documentation subroutine srscl (integerN, realSA, real, dimension( * )SX, integerINCX) SRSCL multiplies a vector by the reciprocal of a real scalar. Purpose: SRSCL multiplies an n-element real vector x by the real scalar…
srotmg.f – Synopsis Functions/Subroutines subroutine srotmg (SD1, SD2, SX1, SY1, SPARAM) SROTMG Function/Subroutine Documentation subroutine srotmg (realSD1, realSD2, realSX1, realSY1, real, dimension(5)SPARAM) SROTMG Purpose: CONSTRUCT THE MODIFIED GIVENS TRANSFORMATION MATRIX H WHICH ZEROS THE SECOND COMPONENT OF THE 2-VECTOR (SQRT(SD1)*SX1,SQRT(SD2)*> SY2)**T. WITH SPARAM(1)=SFLAG, H HAS ONE OF THE FOLLOWING FORMS.. SFLAG=-1.E0 SFLAG=0.E0 SFLAG=1.E0 SFLAG=-2.E0 (SH11…
srotm.f – Synopsis Functions/Subroutines subroutine srotm (N, SX, INCX, SY, INCY, SPARAM) SROTM Function/Subroutine Documentation subroutine srotm (integerN, real, dimension(*)SX, integerINCX, real, dimension(*)SY, integerINCY, real, dimension(5)SPARAM) SROTM Purpose: APPLY THE MODIFIED GIVENS TRANSFORMATION, H, TO THE 2 BY N MATRIX (SX**T) , WHERE **T INDICATES TRANSPOSE. THE ELEMENTS OF SX ARE IN (SX**T) SX(LX+I*INCX), I…