September 29, 2006 Importing complex math functions? | ||||
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Hi, I'm trying to access some complex number routines from C, but I can't get it to work (using 0.167 on linux). Here is some sample code: extern (C) { creal cexpl(creal); // e^x real cabsl(creal); // |x| } As I understand, 'real' is equivalent to 'long double' in C, and 'creal' to 'long double complex', so this should work. But when I try it: writefln( cabsl(3+4i) ); // Works, outputs 5 writefln( cexpl(1+0i) ); // Segmentation fault In general, passing creal arguments and returning reals works, but returning creals segfaults. Why doesn't this work? Does gcc do something fancy with complex types in the C libraries? Nick |
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