RosettaCodeData/Task/Map-range/PureBasic/map-range.basic

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Structure RR
a.f
b.f
EndStructure
Procedure.f MapRange(*a.RR, *b.RR, s)
Protected.f a1, a2, b1, b2
a1=*a\a: a2=*a\b
b1=*b\a: b2=*b\b
ProcedureReturn b1 + ((s - a1) * (b2 - b1) / (a2 - a1))
EndProcedure
;- Test the function
If OpenConsole()
Define.RR Range1, Range2
Range1\a=0: Range1\b=10
Range2\a=-1:Range2\b=0
;
For i=0 To 10
PrintN(RSet(Str(i),2)+" maps to "+StrF(MapRange(@Range1, @Range2, i),1))
Next
EndIf