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Author from LispPad here... Polar complex number literals are actually not part of R7RS and (make-polar ...) would need to be used for writing portable code. Co
by objecthub 6mo ago
Author from LispPad here... Polar complex number literals are actually not part of R7RS and (make-polar ...) would need to be used for writing portable code. Complex number literals with infinite parts are supported, but I noticed that LispPad might behave differently as it does apply mathematical equivalences that are being ignored in other Scheme implementations. Let me know if you see a behavior that violates the R7RS spec. Thanks!
- s20n 6mo agoThanks for working on LispPad, I'm really enjoying using it. > Polar complex number literals are actually not part of R7RS I actually thought they were part of the spec. Specifically, I am referring to the last paragraph from section 6.2.5 of R7RS small <https://small.r7rs.org/attachment/r7rs.pdf https://small.r7rs.org/attachment/r7rs.pdf> This is the excerpt from the pdf: 6.2.5. Syntax of numerical constants ... There are two notations provided for non-real complex numbers: the rectangular notation a+bi, where a is the real part and b is the imaginary part; and the polar no- tation r@θ, where r is the magnitude and θ is the phase (angle) in radians. These are related by the equation a + bi = r cos θ + (r sin θ)i. All of a, b, r , and θ are real numbers.
- objecthub 6mo agoThanks for the reference! I must have overlooked this when implementing the scanner. Will definitely be added. Thanks for letting me know.