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