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version 1.173, 2007/06/26 01:40:47
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version 1.174, 2007/08/10 18:16:28
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Line 569 sub implicit_multiplication {
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Line 569 sub implicit_multiplication {
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| $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi; |
$expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi; |
| # Fill in multiplication signs |
# Fill in multiplication signs |
| # a b -> a*b;3 b -> 3*b;3 4 -> 3*4 |
# a b -> a*b;3 b -> 3*b;3 4 -> 3*4 |
| $expression=~s/(\w)\s+(\w)/$1\*$2/gs; |
# The while-pos-construction is necessary for a b c -> a*b*c*d instead of a*b c*d |
| |
while($expression=~s/([A-Za-z0-9])\s+([A-Za-z0-9])/$1\*$2/gs){pos($expression)--} |
| # )( -> )*(; ) ( -> )*( |
# )( -> )*(; ) ( -> )*( |
| $expression=~s/\)\s*\(/\)\*\(/gs; |
$expression=~s/\)\s*\(/\)\*\(/gs; |
| # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A |
# 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A |
| $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs; |
$expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs; |
| # a ( -> a*( |
# a ( -> a*( |
| $expression=~s/(\w)\s+\(/$1\*\(/gs; |
$expression=~s/([A-Za-z0-9])\s+\(/$1\*\(/gs; |
| # )a -> )*a; )3 -> )*3; ) 3 -> )*3 |
# )a -> )*a; )3 -> )*3; ) 3 -> )*3 |
| $expression=~s/\)\s*(\w)/\)\*$1/gs; |
$expression=~s/\)\s*([A-Za-z0-9])/\)\*$1/gs; |
| # 3&8 -> 3e8; 3&-4 -> 3e-4 |
# 3&8 -> 3e8; 3&-4 -> 3e-4 |
| $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs; |
$expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs; |
| return $expression; |
return $expression; |
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