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Re: Reading 32-bit complex numbers in IDL (16-bit real / 16-bit imaginary) [message #77113 is a reply to message #77112]

Sun, 07 August 2011 08:52

Carsten Lechte
Messages: 124
Registered: August 2006

Senior Member

On 08/07/2011 02:01 PM, Waqas A. Qazi wrote:
> 32-bit imaginary. How can I read the 16-bit real - 16-bit imaginary
> complex number in IDL?

This looks like half precision floats
< https://secure.wikimedia.org/wikipedia/en/wiki/Half_precisio n_floating-point_format>.
However, there are several variants. Do you have any description of your data file that
mentions IEEE 754?

I am not aware of any programming language that supports this format natively. Maybe
this link in the wikipedia article can help you:
<http://www.mathworks.com/matlabcentral/fileexchange/23173>

Else you would have to do the bit fiddling yourself to promote them to 32bit.

chl

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[Message index]

		Re: Reading 32-bit complex numbers in IDL (16-bit real / 16-bit imaginary) By: Wout De Nolf on Sun, 07 August 2011 16:12
		Re: Reading 32-bit complex numbers in IDL (16-bit real / 16-bit imaginary) By: Carsten Lechte on Sun, 07 August 2011 08:52
		Re: Reading 32-bit complex numbers in IDL (16-bit real / 16-bit imaginary) By: Waqas A. Qazi on Fri, 12 August 2011 06:15
		Re: Reading 32-bit complex numbers in IDL (16-bit real / 16-bit imaginary) By: Wout De Nolf on Sat, 13 August 2011 05:26

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