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Merge pull request #1869 from martin-frbg/axpy0 

Handle special case INCX=0,INCY=0 in the axpy interface
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Martin Kroeker 2018-11-25 20:52:49 +01:00 committed by GitHub
parent 5cf18e2875 c171b8ad13
commit 5393759a98
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 11 additions and 0 deletions
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5
interface/axpy.c
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@ -75,6 +75,11 @@ void CNAME(blasint n, FLOAT alpha, FLOAT *x, blasint incx, FLOAT *y, blasint inc
if (alpha == ZERO) return;
if (incx == 0 && incy == 0) {
*y += n * alpha *(*x);
return;
}
IDEBUG_START;
FUNCTION_PROFILE_START();

6
interface/zaxpy.c
View File

@ -82,6 +82,12 @@ void CNAME(blasint n, FLOAT *ALPHA, FLOAT *x, blasint incx, FLOAT *y, blasint in
if ((alpha_r == ZERO) && (alpha_i == ZERO)) return;
if (incx == 0 && incy == 0) {
*y += n * (alpha_r * (*x) - alpha_i* (*(x+1)) );
*(y+1) += n * (alpha_i * (*x) + alpha_r * (*(x +1)) );
return;
}
IDEBUG_START;
FUNCTION_PROFILE_START();