08-18-2008
Thanks all, in case you are interested -- I ended up using sed:
floatVar1=$(echo $Var1 | sed 's/\([0-9]*\(\.[0-9]*\)\?\)[eE]+\?\(-\?[0-9]*\)/(\1*10^\3)/g;s/^/scale=30;/'| bc)
There are some difficulties with the specific scientific notation my data files were using. (having an extra + after the E, 1.00e+1 = 10), so I had trouble getting bc to work, but I may have just messed up. However, the idea behind the question was supposed to be specifically how to convert something from scientific notation to float. Sorry for the confusion.
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LEARN ABOUT PHP
xml_set_notation_decl_handler
XML_SET_NOTATION_DECL_HANDLER(3) 1 XML_SET_NOTATION_DECL_HANDLER(3)
xml_set_notation_decl_handler - Set up notation declaration handler
SYNOPSIS
bool xml_set_notation_decl_handler (resource $parser, callable $handler)
DESCRIPTION
Sets the notation declaration handler function for the XML parser $parser.
A notation declaration is part of the document's DTD and has the following format:
<!NOTATION <parameter>name</parameter>
{ <parameter>systemId</parameter> | <parameter>publicId</parameter>?>
PARAMETERS
o $parser
- A reference to the XML parser to set up notation declaration handler function.
o $handler
-$handler is a string containing the name of a function that must exist when xml_parse(3) is called for $parser. The function
named by $handler must accept five parameters:
handler (resource $parser, string $notation_name, string $base, string $system_id, string $public_id)
o $parser
- The first parameter, parser, is a reference to the XML parser calling the handler.
o $notation_name
- This is the notation's $name, as per the notation format described above.
o $base
- This is the base for resolving the system identifier ($system_id) of the notation declaration. Currently this parameter
will always be set to an empty string.
o $system_id
- System identifier of the external notation declaration.
o $public_id
- Public identifier of the external notation declaration.
If a handler function is set to an empty string, or FALSE, the handler in question is disabled.
Note
Instead of a function name, an array containing an object reference and a method name can also be supplied.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
PHP Documentation Group XML_SET_NOTATION_DECL_HANDLER(3)