\ 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 for aft 10e f* then next 
                precision for aft fdup f>s 10 mod [char] 0 + hold 0.1e f* then next 
                [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 
 

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