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- DDDDLLLLAAAASSSSDDDDTTTT((((3333SSSS)))) DDDDLLLLAAAASSSSDDDDTTTT((((3333SSSS))))
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- NNNNAAAAMMMMEEEE
- DLASDT - create a tree of subproblems for bidiagonal divide and conquer
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- SUBROUTINE DLASDT( N, LVL, ND, INODE, NDIML, NDIMR, MSUB )
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- INTEGER LVL, MSUB, N, ND
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- INTEGER INODE( * ), NDIML( * ), NDIMR( * )
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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.
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- 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
- DLASDT creates a tree of subproblems for bidiagonal divide and conquer.
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- AAAARRRRGGGGUUUUMMMMEEEENNNNTTTTSSSS
- N (input) INTEGER
- On entry, the number of diagonal elements of the bidiagonal
- matrix.
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- LVL (output) INTEGER
- On exit, the number of levels on the computation tree.
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- ND (output) INTEGER
- On exit, the number of nodes on the tree.
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- INODE (output) INTEGER array, dimension ( N )
- On exit, centers of subproblems.
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- NDIML (output) INTEGER array, dimension ( N )
- On exit, row dimensions of left children.
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- NDIMR (output) INTEGER array, dimension ( N )
- On exit, row dimensions of right children.
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- MSUB (input) INTEGER.
- On entry, the maximum row dimension each subproblem at the bottom
- of the tree can be of.
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- PPPPaaaaggggeeee 1111
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- DDDDLLLLAAAASSSSDDDDTTTT((((3333SSSS)))) DDDDLLLLAAAASSSSDDDDTTTT((((3333SSSS))))
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- FFFFUUUURRRRTTTTHHHHEEEERRRR DDDDEEEETTTTAAAAIIIILLLLSSSS
- Based on contributions by
- Ming Gu and Huan Ren, Computer Science Division, University of
- California at Berkeley, USA
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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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