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  /src/lib/libm/src/
s_sinpi.c 28 * sinpi(x) computes sin(pi*x) without multiplication by pi (almost). First,
29 * note that sinpi(-x) = -sinpi(x), so the algorithm considers only |x| and
33 * 1. For small |x|, sinpi(x) = pi * x where a sloppy threshold is used. The
39 * 2. For |x| < 1, argument reduction is not required and sinpi(x) is
48 * sinpi(x) = sin(pi*(j0+r))
51 * = +-sinpi(r)
54 * sinpi(r) is then computed via an appropriate kernel.
56 * 4. For |x| >= 0x1p(P-1), |x| is integral and sinpi(x) = copysign(0,x).
60 * sinpi(+-0) = +-
84 sinpi(double x) function in typeref:typename:double
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namespace.h 99 #define sinpi _sinpi macro

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