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author | Siddhesh Wani | 2015-05-25 14:46:31 +0530 |
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committer | Siddhesh Wani | 2015-05-25 14:46:31 +0530 |
commit | 6a320264c2de3d6dd8cc1d1327b3c30df4c8cb26 (patch) | |
tree | 1b7bd89fdcfd01715713d8a15db471dc75a96bbf /2.3-1/src/fortran/blas/zdscal.f | |
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Original Version
Diffstat (limited to '2.3-1/src/fortran/blas/zdscal.f')
-rw-r--r-- | 2.3-1/src/fortran/blas/zdscal.f | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/2.3-1/src/fortran/blas/zdscal.f b/2.3-1/src/fortran/blas/zdscal.f new file mode 100644 index 00000000..8123424d --- /dev/null +++ b/2.3-1/src/fortran/blas/zdscal.f @@ -0,0 +1,30 @@ + subroutine zdscal(n,da,zx,incx) +c +c scales a vector by a constant. +c jack dongarra, 3/11/78. +c modified 3/93 to return if incx .le. 0. +c modified 12/3/93, array(1) declarations changed to array(*) +c + double complex zx(*) + double precision da + integer i,incx,ix,n +c + if( n.le.0 .or. incx.le.0 )return + if(incx.eq.1)go to 20 +c +c code for increment not equal to 1 +c + ix = 1 + do 10 i = 1,n + zx(ix) = dcmplx(da,0.0d0)*zx(ix) + ix = ix + incx + 10 continue + return +c +c code for increment equal to 1 +c + 20 do 30 i = 1,n + zx(i) = dcmplx(da,0.0d0)*zx(i) + 30 continue + return + end |