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authorjulie <julielangou@users.noreply.github.com>2011-11-01 22:02:31 +0000
committerjulie <julielangou@users.noreply.github.com>2011-11-01 22:02:31 +0000
commitd5c30c90bdecf38da1064e2ed52583634573e741 (patch)
tree480fc5ff31ee14b83116b6428aad79ea6e89362d /SRC/chpgvx.f
parent04670a68760fa27333f8bcef8172f71adc6880ef (diff)
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Never say never...
Diffstat (limited to 'SRC/chpgvx.f')
-rw-r--r--SRC/chpgvx.f24
1 files changed, 8 insertions, 16 deletions
diff --git a/SRC/chpgvx.f b/SRC/chpgvx.f
index 6dce19a2..a1d0b904 100644
--- a/SRC/chpgvx.f
+++ b/SRC/chpgvx.f
@@ -98,8 +98,7 @@
*> is stored in the array AP as follows:
*> if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j;
*> if UPLO = 'L', AP(i + (j-1)*(2*n-j)/2) = A(i,j) for j<=i<=n.
-*> \endverbatim
-*> \verbatim
+*>
*> On exit, the contents of AP are destroyed.
*> \endverbatim
*>
@@ -111,8 +110,7 @@
*> is stored in the array BP as follows:
*> if UPLO = 'U', BP(i + (j-1)*j/2) = B(i,j) for 1<=i<=j;
*> if UPLO = 'L', BP(i + (j-1)*(2*n-j)/2) = B(i,j) for j<=i<=n.
-*> \endverbatim
-*> \verbatim
+*>
*> On exit, the triangular factor U or L from the Cholesky
*> factorization B = U**H*U or B = L*L**H, in the same storage
*> format as B.
@@ -126,8 +124,7 @@
*> \param[in] VU
*> \verbatim
*> VU is REAL
-*> \endverbatim
-*> \verbatim
+*>
*> If RANGE='V', the lower and upper bounds of the interval to
*> be searched for eigenvalues. VL < VU.
*> Not referenced if RANGE = 'A' or 'I'.
@@ -141,8 +138,7 @@
*> \param[in] IU
*> \verbatim
*> IU is INTEGER
-*> \endverbatim
-*> \verbatim
+*>
*> If RANGE='I', the indices (in ascending order) of the
*> smallest and largest eigenvalues to be returned.
*> 1 <= IL <= IU <= N, if N > 0; IL = 1 and IU = 0 if N = 0.
@@ -156,17 +152,14 @@
*> An approximate eigenvalue is accepted as converged
*> when it is determined to lie in an interval [a,b]
*> of width less than or equal to
-*> \endverbatim
-*> \verbatim
+*>
*> ABSTOL + EPS * max( |a|,|b| ) ,
-*> \endverbatim
-*> \verbatim
+*>
*> where EPS is the machine precision. If ABSTOL is less than
*> or equal to zero, then EPS*|T| will be used in its place,
*> where |T| is the 1-norm of the tridiagonal matrix obtained
*> by reducing AP to tridiagonal form.
-*> \endverbatim
-*> \verbatim
+*>
*> Eigenvalues will be computed most accurately when ABSTOL is
*> set to twice the underflow threshold 2*SLAMCH('S'), not zero.
*> If this routine returns with INFO>0, indicating that some
@@ -199,8 +192,7 @@
*> The eigenvectors are normalized as follows:
*> if ITYPE = 1 or 2, Z**H*B*Z = I;
*> if ITYPE = 3, Z**H*inv(B)*Z = I.
-*> \endverbatim
-*> \verbatim
+*>
*> If an eigenvector fails to converge, then that column of Z
*> contains the latest approximation to the eigenvector, and the
*> index of the eigenvector is returned in IFAIL.