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41 lines
1.5 KiB
Plaintext
41 lines
1.5 KiB
Plaintext
The [[CVDMBF]] function decodes an 8-byte [[STRING]] generated by [[MKDMBF$]] (or read from a file) to [[DOUBLE]] numeric values.
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{{PageSyntax}}
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: {{Parameter|result#}} = [[CVDMBF]]({{Parameter|stringData$}})
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{{PageDescription}}
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* ''CV'' functions ([[CVD]], [[CVS]], [[CVI]], [[CVL]], [[CVDMBF]], [[CVSMBF]]) are used to convert values encoded by ''MK$'' functions ([[MKD$]], [[MKS$]], [[MKI$]], [[MKL$]], [[MKDMBF$]], [[MKSMBF$]]).
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* '''QB64''' has [[_CV]] and [[_MK$]] functions which can also deal with extended [[Data types|data types]].
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* [[DOUBLE]] values can range up to 15 decimal point digits. Decimal point accuracy depends on whole value places taken.
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{{PageExamples}}
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''Example 1:'' Showcases the reduced space to store an encoded number.
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{{CodeStart}}
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a# = 77000.24523213
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{{Cl|PRINT}} "Value of a#:"; a#
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b$ = {{Cl|MKDMBF$}}(a#)
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{{Cl|PRINT}} "Value of a# encoded using MKDMBF$: "; b$
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{{Cl|PRINT}} "The string above, decoded using CVDMBF:"; {{Cl|CVDMBF}}(b$)
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{{CodeEnd}}
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{{OutputStart}}
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Value of a#: 77000.24523213
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Value of a# encoded using MKDmbf$: 5─c▼d▬æ
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The string above, decoded using CVDMBF: 77000.24523213
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{{OutputEnd}}
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:Since the representation of a double-precision number can use up to 15 ASCII characters (fifteen bytes), writing to a file using [[MKDMBF$]] conversion, and then reading back with the [[CVDMBF]] conversion can save up to 7 bytes of storage space.
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{{PageSeeAlso}}
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* [[MKD$]], [[MKI$]], [[MKS$]], [[MKL$]], [[MKDMBF$]], [[MKSMBF$]]
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* [[CVI]], [[CVS]], [[CVD]], [[CVL]], [[CVSMBF]]
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* [[_CV]], [[_MK$]]
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{{PageNavigation}}
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