Re-root site.

common/floats.fs

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+\ Copyright 2021 Bradley D. Nelson
+\
+\ Licensed under the Apache License, Version 2.0 (the "License");
+\ you may not use this file except in compliance with the License.
+\ You may obtain a copy of the License at
+\
+\     http://www.apache.org/licenses/LICENSE-2.0
+\
+\ Unless required by applicable law or agreed to in writing, software
+\ distributed under the License is distributed on an "AS IS" BASIS,
+\ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+\ See the License for the specific language governing permissions and
+\ limitations under the License.
+
+: sf, ( r -- ) here sf! sfloat allot ;
+
+: afliteral ( r -- ) ['] DOFLIT , sf, align ;
+: fliteral   afliteral ; immediate
+
+: fconstant ( r "name" ) create sf, align does> sf@ ;
+: fvariable ( "name" ) create sfloat allot align ;
+
+6 value precision
+: set-precision ( n -- ) to precision ;
+
+internals definitions
+: #f+s ( r -- ) fdup precision 0 ?do 10e f* loop
+                precision 0 ?do fdup f>s 10 mod [char] 0 + hold 0.1e f* loop
+                [char] . hold fdrop f>s #s ;
+forth definitions internals
+
+: #fs ( r -- ) fdup f0< if fnegate #f+s [char] - hold else #f+s then ;
+: f. ( r -- ) <# #fs #> type space ;
+: f.s   ." <" fdepth n. ." > "
+        fdepth 0 max for aft fp@ r@ sfloats - sf@ f. then next ;
+
+forth definitions