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Author	SHA1	Message	Date
Chris Mumford	aff158e922	Create long double pi constant	2025-07-11 13:59:41 -04:00
Chris Mumford	d12c0e1206	Use M_PI instead of M_PIl ... M_PIl is the double precision constant for pi (3.14...). This is not defined in all toolchains, resulting in the following build error: ``` test/testcpp.cc:46:35: error: use of undeclared identifier 'M_PIl'; did you mean 'P_PID'? 46 | long double phinc = 2*k0* M_PIl / nfft; | ^~~~~ | P_PID ``` The double precision constants may be a GNU extension. See: https://www.gnu.org/software/libc/manual/html_node/Mathematical-Constants.html_node Switching the test to use the single precision M_PI avoids this error. The test still passes as the added precision of the double is not required. This fixes #87.	2024-11-19 11:14:47 -05:00