Rework the introduction

The information on quantization and numerics was out of date.
The tensor access helpers were also consolidated and moved into
their own section in the pseudocode chapter.

Signed-off-by: Eric Kunze <eric.kunze@arm.com>
Change-Id: I472e674ed88f4a3ef379010cf50b13cf8afa5f17

1 files changed, 3 insertions, 11 deletions

diff --git a/chapters/data_layout.adoc b/chapters/data_layout.adoc
index 099a4c2..7bc2413 100644
--- a/chapters/data_layout.adoc
+++ b/chapters/data_layout.adoc
@@ -137,18 +137,10 @@ ERROR_IF(tensor_size(shape1) != tensor_size(shape));
 
 for_each(index in shape) {
     // Calculate flattened index for the output location (index)
-    int32_t calculated_index = 0;
-    int32_t multiplier = 1;
-    for(r = rank(shape) - 1; r >= 0; r--) {
-        calculated_index += index[r] * multiplier;
-        multiplier *= shape[r];
-    }
+    size_t offset = tensor_index_to_offset(shape, index);
     // Now convert to the location in the input
-    int32_t tmp_index[];
-    for(r = rank(shape1) - 1; r >= 0; r--) {
-        tmp_index[r] = calculated_index % shape1[r];
-        calculated_index /= shape1[r];
-    }
+    dim_t tmp_index = tensor_offset_to_index(shape1, offset);
+
     // Now read/write the value
     in_out_t val = tensor_read<in_out_t>(input, shape1, tmp_index);
     tensor_write<in_out_t>(output, shape, index, val);