sin 25 maint/gnulib/lib/sinf.c return (float) sin ((double) x); sin 43 maint/gnulib/lib/sinl.c return sin (x); sin 24 maint/gnulib/tests/test-sin.c SIGNATURE_CHECK (sin, double, (double)); sin 36 maint/gnulib/tests/test-sin.c y = sin (x);