A friend of mine runs a pharmacy.   He has a specialized function in his Dispensary application which receives a decimal value of currency and replaces it to a standard value.   This value is regulated by a government department.



Task

Given a floating point value between   0.00   and   1.00,   rescale according to the following table:

>=  0.00  <  0.06  :=  0.10
>=  0.06  <  0.11  :=  0.18
>=  0.11  <  0.16  :=  0.26
>=  0.16  <  0.21  :=  0.32
>=  0.21  <  0.26  :=  0.38
>=  0.26  <  0.31  :=  0.44
>=  0.31  <  0.36  :=  0.50
>=  0.36  <  0.41  :=  0.54
>=  0.41  <  0.46  :=  0.58
>=  0.46  <  0.51  :=  0.62
>=  0.51  <  0.56  :=  0.66
>=  0.56  <  0.61  :=  0.70
>=  0.61  <  0.66  :=  0.74
>=  0.66  <  0.71  :=  0.78
>=  0.71  <  0.76  :=  0.82
>=  0.76  <  0.81  :=  0.86
>=  0.81  <  0.86  :=  0.90
>=  0.86  <  0.91  :=  0.94
>=  0.91  <  0.96  :=  0.98
>=  0.96  <  1.01  :=  1.00



CONSTANT: dispensary-data {
{ 0.06 0.10 }
{ 0.11 0.18 }
{ 0.16 0.26 }
{ 0.21 0.32 }
{ 0.26 0.38 }
{ 0.31 0.44 }
{ 0.36 0.50 }
{ 0.41 0.54 }
{ 0.46 0.58 }
{ 0.51 0.62 }
{ 0.56 0.66 }
{ 0.61 0.70 }
{ 0.66 0.74 }
{ 0.71 0.78 }
{ 0.76 0.82 }
{ 0.81 0.86 }
{ 0.86 0.90 }
{ 0.91 0.94 }
{ 0.96 0.98 }
{ 1.01 1.00 } }
 
: price-fraction ( n -- n ) dispensary-data [ first over >= ] find 2nip second ;
 
{ 0 0.5 0.65 0.66 1 } [ price-fraction ] map