Add powers of ten table

src/aliases/,aliases_cpu.s

@@ -136,3 +136,10 @@
 		bvc *+5
 		jmp @dst
 } }
+
+
+; 32-bit integer constant in big endian order
+
+!macro be32 @val {
+  !byte (@val >> 24) & $FF, (@val >> 16) & $FF, (@val >> 8) & $FF, (@val) & $FF
+}

src/basic/math_consts/bf16.table_power_of_ten.s

@@ -0,0 +1,24 @@
+;; #LAYOUT# STD *       #TAKE
+;; #LAYOUT# X16 BASIC_0 #TAKE-OFFSET 2000
+;; #LAYOUT# *   BASIC_0 #TAKE
+;; #LAYOUT# *   *       #IGNORE
+
+; This file is under the MIT license, it contains code released by Microsoft Corporation.
+; See LICENSE for more information.
+
+; Math package - table of powers of ten
+;
+; This is verified to be identical to the original Microsoft implementation where it was named FOUTBL
+
+
+FOUTBL:
+    +be32 -100000000
+    +be32 10000000
+    +be32 -1000000
+    +be32 100000
+    +be32 -10000
+    +be32 1000
+    +be32 -100
+    +be32 10
+    +be32 -1
+FDCEND: