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Is there a function for mathematics constant PI?

richardyuan
what's the expression for π in cadence skill?
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  • Andrew Beckett

    Unfortunately I'm unable to offer much more than speculation. Looking at a comment in the source code, there's a PCR number reference (the predecessor to our current CCR system for tracking changes). The number is low enough that it would have been before I joined Cadence, and at a rough guess about 20 years ago. It's not from the era of the early days of SKILL (late 1980's) but more like 1994. None of the people involved in developing SKILL then are still around, and the PCR system no longer exists so I can't find out the history.

    I suspect that it was a pragmatic decision at the time based on requests from users/R&D, rather than looking around to see what other LISP implementations did.

    Regards,

    Andrew. 

     

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  • Andrew Beckett

    Unfortunately I'm unable to offer much more than speculation. Looking at a comment in the source code, there's a PCR number reference (the predecessor to our current CCR system for tracking changes). The number is low enough that it would have been before I joined Cadence, and at a rough guess about 20 years ago. It's not from the era of the early days of SKILL (late 1980's) but more like 1994. None of the people involved in developing SKILL then are still around, and the PCR system no longer exists so I can't find out the history.

    I suspect that it was a pragmatic decision at the time based on requests from users/R&D, rather than looking around to see what other LISP implementations did.

    Regards,

    Andrew. 

     

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