DLARTG Methods |
The DLARTG type exposes the following members.
Name | Description | |
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Run | Purpose ======= DLARTG generate a plane rotation so that [ CS SN ] . [ F ] = [ R ] where CS**2 + SN**2 = 1. [ -SN CS ] [ G ] [ 0 ] This is a slower, more accurate version of the BLAS1 routine DROTG, with the following other differences: F and G are unchanged on return. If G=0, then CS=1 and SN=0. If F=0 and (G .ne. 0), then CS=0 and SN=1 without doing any floating point operations (saves work in DBDSQR when there are zeros on the diagonal). If F exceeds G in magnitude, CS will be positive. |
Name | Description | |
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GetEnumNames | (Defined by General) | |
IsValidDouble | (Defined by General) |