From dee8557d58fd34750514e5d68e20da0e977e48ce Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Tue, 12 Mar 2024 20:40:29 +0100
Subject: [PATCH] handle incx < 0

---
 kernel/riscv64/znrm2_vector.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/riscv64/znrm2_vector.c b/kernel/riscv64/znrm2_vector.c
index 6ee3be79e..cace38891 100644
--- a/kernel/riscv64/znrm2_vector.c
+++ b/kernel/riscv64/znrm2_vector.c
@@ -96,7 +96,7 @@ FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x)
 {
         BLASLONG i=0;
 
-	if (n <= 0 || inc_x <= 0) return(0.0);
+	if (n <= 0 || inc_x == 0) return(0.0);
 
         FLOAT_V_T v_ssq, v_scale, v0, v1, v_zero;
         unsigned int gvl = 0;
@@ -176,7 +176,7 @@ FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x)
                         }
 
                         i += inc_x*2;
-                }while(i<n);
+                }while(abs(i)<abs(n));
         }
 
         return(scale * sqrt(ssq));