norm to work inplace

Author: mohawk2

Changes

@@ -1,6 +1,7 @@
 - allaxis*vals can now take 1-D ndarrays as start and endpoints
 - PP operation for inverse Transform::t_spherical
 - add PDL::Guide::NumPy doc (#361)
+- norm works inplace
 
 2.103 2026-03-03
 - fix regression in *linvals so takes ndarrays as start and end again

lib/PDL/Primitive.pd

@@ -414,6 +414,7 @@ EOD
 
 pp_def('norm',
        HandleBad => 1,
+       Inplace => 1,
        Pars => 'vec(n); [o] norm(n)',
        GenericTypes => [ppdefs_all],
        Doc => 'Normalises a vector to unit Euclidean length

t/primitive-misc.t

@@ -14,13 +14,15 @@ subtest hist => sub {
 subtest norm => sub {
   my $x = pdl('[[i 2+3i] [4+5i 6+7i]]');
   is_pdl $x->norm,
-    pdl(
+    my $exp = pdl(
       [
           [ 0.267261 * i,            0.534522 + 0.801783 * i ],
           [ 0.356348 + 0.445435 * i, 0.534522 + 0.623609 * i ],
       ]
     ),
     'native complex norm works';
+  $x->inplace->norm;
+  is_pdl $x, $exp, 'norm works inplace';
 };
 
 subtest glue => sub {