version 1.40, 2002/12/15 17:38:51
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version 1.46, 2004/12/31 13:23:57
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\ High level floating point 14jan94py |
\ High level floating point 14jan94py |
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\ Copyright (C) 1995,1997 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1997,2003,2004 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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Line 211 set-current
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Line 211 set-current
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\G @code{f~abs}; r3=0: bitwise comparison; r3<0: @code{fnegate f~rel}. |
\G @code{f~abs}; r3=0: bitwise comparison; r3<0: @code{fnegate f~rel}. |
fdup f0= |
fdup f0= |
IF \ bitwise comparison |
IF \ bitwise comparison |
fp@ float+ 1 floats over float+ -text 0= |
fp@ float+ 1 floats over float+ over str= |
fdrop fdrop fdrop |
fdrop fdrop fdrop |
EXIT |
EXIT |
THEN |
THEN |
Line 222 set-current
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Line 222 set-current
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fnegate f~rel |
fnegate f~rel |
THEN ; |
THEN ; |
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: f.s ( -- ) \ gforth f-dot-s |
\ proposals from Krishna Myeni in <cjsp2d$47l$1@ngspool-d02.news.aol.com> |
\G Display the number of items on the floating-point stack, |
\ not sure if they are a good idea |
\G followed by a list of the items; TOS is the right-most item. |
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." <" fdepth 0 .r ." > " fdepth 0 max maxdepth-.s @ min dup 0 |
: FTRUNC ( r1 -- r2 ) |
?DO dup i - 1- floats fp@ + f@ f. LOOP drop ; |
\ round towards 0 |
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\ !! should be implemented properly |
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F>D D>F ; |
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: FMOD ( r1 r2 -- r ) |
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\ remainder of r1/r2 |
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FOVER FOVER F/ ftrunc F* F- ; |