long double data type
long double data type
- Subject: long double data type
- From: Luigi Castelli <email@hidden>
- Date: Mon, 14 Jun 2010 10:58:31 -0700 (PDT)
Hi there,
I am on a MacBook Pro Intel Core 2 Duo, running Snow Leopard 10.6.2.
I am working on a DSP audio mastering application that needs to perform mathematical operation at very high resolution.
To accomplish this task I am thinking about performing all my calculations in quad precision, using the long double data type.
After a little research and experimentation, I found that in Xcode 3.2.1 this data type is 128 bits, however I also came across other statements that indicate that only the first 80 bits are significant and that this data type might not be natively supported. Furthermore I read other claims that state that this type might be equivalent to a 64 bit double data type depending on processor architecture.
Since at this point I am fairly confused, could someone shed some light on these and maybe other issues associated with the long double data type relative to the above platform and compiler?
Is it a viable choice for a DSP audio application or will I regret it in the long run?
Any advice or suggestion is highly welcome.
Thanks.
- Luigi Castelli
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