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Apr 13, 2024
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Update linalg.md and example_blas_gemv.f90 #797

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Update linalg.md and example_blas_gemv.f90
zoziha Apr 13, 2024
54eaecf
update stdlib_linalg.md
zoziha Apr 13, 2024
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4 changes: 4 additions & 0 deletions doc/specs/stdlib_linalg.md
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Expand Up @@ -41,6 +41,10 @@ These can be enabled during the build process. For example, with CMake, one can
The same is possible from the `fpm` branch, where the `cpp` preprocessor is enabled by default. For example, the macros can be added to the project's manifest:

```toml
# Link against appropriate external BLAS and LAPACK libraries, if necessary
[build]
link = ["blas", "lapack"]

[dependencies]
stdlib="*"

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6 changes: 3 additions & 3 deletions example/linalg/example_blas_gemv.f90
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Expand Up @@ -2,13 +2,13 @@ program example_gemv
use stdlib_linalg, only: eye
use stdlib_linalg_blas, only: sp,gemv
implicit none(type,external)
real(sp) :: A(2, 2), B(2)
real(sp) :: A(2, 2), B(2), C(2)
B = [1.0,2.0]
A = eye(2)

! Use legacy BLAS interface
call gemv('No transpose',m=size(A,1),n=size(A,2),alpha=1.0,a=A,lda=size(A,1),x=B,incx=1,beta=0.0,y=B,incy=1)
call gemv('No transpose',m=size(A,1),n=size(A,2),alpha=1.0,a=A,lda=size(A,1),x=B,incx=1,beta=0.0,y=C,incy=1)

print *, B ! returns 1.0 2.0
print *, C ! returns 1.0 2.0

end program example_gemv