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- CCCCPPPPOOOOTTTTRRRRIIII((((3333SSSS)))) CCCCPPPPOOOOTTTTRRRRIIII((((3333SSSS))))
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- NNNNAAAAMMMMEEEE
- CPOTRI - compute the inverse of a complex Hermitian positive definite
- matrix A using the Cholesky factorization A = U**H*U or A = L*L**H
- computed by CPOTRF
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- SUBROUTINE CPOTRI( UPLO, N, A, LDA, INFO )
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- CHARACTER UPLO
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- INTEGER INFO, LDA, N
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- COMPLEX A( LDA, * )
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- IIIIMMMMPPPPLLLLEEEEMMMMEEEENNNNTTTTAAAATTTTIIIIOOOONNNN
- These routines are part of the SCSL Scientific Library and can be loaded
- using either the -lscs or the -lscs_mp option. The -lscs_mp option
- directs the linker to use the multi-processor version of the library.
-
- When linking to SCSL with -lscs or -lscs_mp, the default integer size is
- 4 bytes (32 bits). Another version of SCSL is available in which integers
- are 8 bytes (64 bits). This version allows the user access to larger
- memory sizes and helps when porting legacy Cray codes. It can be loaded
- by using the -lscs_i8 option or the -lscs_i8_mp option. A program may use
- only one of the two versions; 4-byte integer and 8-byte integer library
- calls cannot be mixed.
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- PPPPUUUURRRRPPPPOOOOSSSSEEEE
- CPOTRI computes the inverse of a complex Hermitian positive definite
- matrix A using the Cholesky factorization A = U**H*U or A = L*L**H
- computed by CPOTRF.
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- AAAARRRRGGGGUUUUMMMMEEEENNNNTTTTSSSS
- UPLO (input) CHARACTER*1
- = 'U': Upper triangle of A is stored;
- = 'L': Lower triangle of A is stored.
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- N (input) INTEGER
- The order of the matrix A. N >= 0.
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- A (input/output) COMPLEX array, dimension (LDA,N)
- On entry, the triangular factor U or L from the Cholesky
- factorization A = U**H*U or A = L*L**H, as computed by CPOTRF.
- On exit, the upper or lower triangle of the (Hermitian) inverse
- of A, overwriting the input factor U or L.
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- LDA (input) INTEGER
- The leading dimension of the array A. LDA >= max(1,N).
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- INFO (output) INTEGER
- = 0: successful exit
- < 0: if INFO = -i, the i-th argument had an illegal value
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- PPPPaaaaggggeeee 1111
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- CCCCPPPPOOOOTTTTRRRRIIII((((3333SSSS)))) CCCCPPPPOOOOTTTTRRRRIIII((((3333SSSS))))
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- > 0: if INFO = i, the (i,i) element of the factor U or L is
- zero, and the inverse could not be computed.
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- INTRO_LAPACK(3S), INTRO_SCSL(3S)
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- This man page is available only online.
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- PPPPaaaaggggeeee 2222
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