tofloat

Converts values of any snumeric data type or string to values of type float.

Available in version 5.2.0 and later.

Prototype

	function tofloat (
		input_val  : snumeric data type or string   
	)

	return_val [dimsizes(input_val)] :  float

Arguments

A variable of any snumeric data type or string of any dimension.

Return value

Returns floats. If the input variable is double or signed/unsigned long, or 64-bit integer, there may be some precision lost. The dimensionality of the output matches that of the input.

Any input value that is out of range for a float will be returned as a missing value.

Description

This function converts any snumeric data or string to float values. If the input is double or signed/unsigned long, or 64-bit integer, there may be some precision lost.

Any input value that is out of range for a float will be returned as a missing value.

Attributes, with the exception of _FillValue, are not propagated by the conversion functions.

Special considerations apply to how missing values and out-of-range values are handled in the conversion functions. For this function an out-of-range value could be valid in its original type, but not in the valid range of a float. An out-of-range value is converted to a missing value, but what that missing value is depends on the circumstances of the particular conversion being performed. For example, determination has to be made whether a missing value for a variable to be converted is in the range of the type of the target variable.

See Also

tochar, tobyte, toshort, toushort, toint, touint, tolong, toulong, toint64, touint64, tostring, totype

Examples

Example

 a = 64.5
 b = 31.26
 c = a - b
 d = a + b
 e = a * b
 f = e / c
 g = (/a, b, c, d/)

 print(a)
 print(b)
 print(c)
 print(d)
 print(e)
 print(f)
 print(g)

 h = abs(-a)
 print(h)

 i = min(g)
 print(i)

 j = max(g)
 print(j)

 short_array = new((/2,2/), short)
 short_array = 215h
 print(short_array)
 short2float = tofloat(short_array)
 print(short2float)

 ushort_array = new((/2,2/), ushort)
 ushort_array = 8924H
 print(ushort_array)
 ushort2float = tofloat(ushort_array)
 print(ushort2float)

 int_array = new((/2,2/), integer)
 int_array = 2147483640
 print(int_array)
 int2float = tofloat(int_array)
 print(int2float)

 uint_array = new((/2,2/), uint)
 uint_array = 2147483649I
 print(uint_array)
 uint2float = tofloat(uint_array)
 print(uint2float)

 long_array = new((/2,2/), long)
 long_array = 2147483641l
 print(long_array)
 long2float = tofloat(long_array)
 print(long2float)

 ulong_array = new((/2,2/), ulong)
 ulong_array = 2147483649L
 print(ulong_array)
 ulong2float = tofloat(ulong_array)
 print(ulong2float)

 int64_array = new((/2,2/), int64)
 int64_array = 9223372028264841214q
 print(int64_array)
 int642float = tofloat(int64_array)
 print(int642float)

 uint64_array = new((/2,2/), uint64)
 uint64_array = 9223372028264841219Q
 print(uint64_array)
 uint642float = tofloat(uint64_array)
 print(uint642float)

 str_array = new((/2,2/), string, "997452379")
 str_array = "123.456"
 print(str_array)
 str2float = tofloat(str_array)
 print(str2float)

 float_array = new((/2,2/), float)
 float_array = 1.2384
 print(float_array)
 float2float = tofloat(float_array)
 print(float2float)


 double_array = new((/2,2/), double)

 double_array = 12.94
 print(double_array)
 double2float = tofloat(double_array)
 print(double2float)

 double_array = 1238278456.02394
 print(double_array)
 double2float = tofloat(double_array)
 print(double2float)