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Side by Side Diff: fusl/src/complex/casin.c

Issue 1573973002: Add a "fork" of musl as //fusl. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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1 #include "libm.h"
2
3 // FIXME
4
5 /* asin(z) = -i log(i z + sqrt(1 - z*z)) */
6
7 double complex casin(double complex z)
8 {
9 double complex w;
10 double x, y;
11
12 x = creal(z);
13 y = cimag(z);
14 w = CMPLX(1.0 - (x - y)*(x + y), -2.0*x*y);
15 return clog(CMPLX(-y, x) + csqrt(w));
16 }
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