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| Declaration: |
TILabFStream.ReadFPNum(AllowExp: boolean; DecPoint: integer): double; |
The function ReadFPNum reads and decodes a floating point number from the text stream, starting at the current stream position. Valid characters are the digits '0'...'9', 'E', '.', leading '-' and '+' signs, and leading blanks (ASCII 32), leading tabs (ASCII 9), leading line feeds (ASCII 10) and leading carriage returns (ASCII 13). If the parameter AllowExp is set TRUE the scanned number may be optionally be in exponential notation. The parameter DecPoint determines which character is accepted as decimal separator:
| DecPoint |
accepted character |
| 1 |
dot |
| 2 |
comma |
| 3 |
either comma or dot |
On return, contains the corresponding floating point number; the property Position of the stream points to the first character after the scanned number.
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| Hint 1: |
If ReadFPNum encounters a number which is greater than +uc_MaxDouble, or less than -uc_MaxDouble, a value of uc_MaxDouble (-uc_MaxDouble) is returned. |
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