SSYR2K/DSYR2K/CHER2K/CSYR2K/ZHER2K/ZSYR2K |
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| CHARACTER*1 | uplo, trans |
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| INTEGER*8 | n, k, lda, ldb, ldc | |||||
| REAL*8 | beta |
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| COMPLEX*16 | alpha, a(lda, *), b(ldb, *), c(ldc, n) | |||||
| CALL ZHER2K(uplo, trans, n, k, alpha, a, lda, b, ldb, beta, c, ldc) | ||||||
| CHARACTER*1 | uplo, trans |
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| INTEGER*8 | n, k, lda, ldb, ldc | |||||
| COMPLEX*16 | alpha, beta, a(lda, *), b(ldb, *), c(ldc, n) | |||||
| CALL ZSYR2K(uplo, trans, n, k, alpha, a, lda, b, ldb, beta, c, ldc) | ||||||
Input | uplo | Upper/lower triangular storage option for C: | |||||
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| ’L’ or ’l’ | Reference and update only the lower | ||||
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| triangle of C | ||||
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| ’U’ or ’u’ | Reference and update only the upper | ||||
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| triangle of C | ||||
| trans | Specifies the operation to be performed: | |||||
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| ’N’ or ’n’ | Compute C ← αABT + | α |
| B AT + βC | |
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| ’T’ or ’t’ | Compute C ← α AT B + | α | BT A + βC | ||
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| ’C’ or ’c’ | Compute C ← αA*B + | α | B* A + βC | ||
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| ’T’ and ’t’ are invalid in subprograms CHER2K and | |||||
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| ZHER2K, and ’C’ and ’c’ are invalid in subprograms | |||||
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| CSYR2K and ZSYR2K. In subprograms SSYR2K and | |||||
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| DSYR2K, ’C’ and ’c’ have the same meaning as ’T’ | |||||
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| and ’t’. |
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| n | Number of rows and columns in matrix C, n ≥ 0. If n = | |||||
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| 0, the subprograms do not reference a, b, or c. | |||||
286HP MLIB User’s Guide