ZTrim() : Remove redundant leading/trailing zeroes from a number

[Suresh]

It would seem that a simple Format will handle most of what is needed.

I need 0.000001 to be left as it is, but g option converts it to e notation

Code: Select all

MsgBox % Format("{1:g}", 0.000001 ) ; 1e-006

which is not even valid for AHK math operations. The result should be 1.0e-006 to be a valid number.

[carno]

How can this be modified so that I can trim the leading floating zeros only after the decimal point but leave 2 zeros after the decimal point if all digits after the decimal point are zeros and 1 zero after the first non-zero digit following the decimal point if the remaining digits are also zeros? Examples:
123.000000 > 123.00
123.012345 > 123.012345
123.100000 > 123.10
123.123456 > 123.123456
123.120000 > 123.12

[FanaticGuru]

It would seem that a simple Format will handle most of what is needed.

I need 0.000001 to be left as it is, but g option converts it to e notation

Code: Select all

MsgBox % Format("{1:g}", 0.000001 ) ; 1e-006

which is not even valid for AHK math operations. The result should be 1.0e-006 to be a valid number.

Old post but, you want f for plain old floating point.
MsgBox % Format("{:f}", 0.000001)

FG

[FanaticGuru]

How can this be modified so that I can trim the leading floating zeros only after the decimal point but leave 2 zeros after the decimal point if all digits after the decimal point are zeros and 1 zero after the first non-zero digit following the decimal point if the remaining digits are also zeros? Examples:
123.000000 > 123.00
123.012345 > 123.012345
123.100000 > 123.10
123.123456 > 123.123456
123.120000 > 123.12

I don't think Format can do this but here is a RegEx:

Code: Select all

for k, v in [123.000000, 123.012345, 123.100000, 123.123456, 123.120000]
	MsgBox % RemoveOver2TrailingZero(v)

RemoveOver2TrailingZero(x)
{
	return RegExReplace(x, "(^\d*.\d\d\d*?)(0*)$", "$1") 
}

Tested only on your example numbers.

FG

[jeeswg]

Note: carno has asked the same question here, which is a better place to answer:
RegEx to trim floating decimal places - AutoHotkey Community
https://autohotkey.com/boards/viewtopic.php?f=5&t=61524