nsh> tests float

--- SINGLE PRECISION TESTS ---
The single precision test involves calls to fabsf(),
if test fails check this function as well.

         success: sinf(0.0f) == 0.0f
         success: sinf(1.0f) == 0.84147f
         success: asinf(1.0f) == 1.57079f
         success: cosf(1.0f) == 0.54030f
         success: acosf(1.0f) == 0.0f
         success: sinf(0.1f) == 0.09983f
         success: sqrt(2.0f) == 1.41421f
         success: atan2f(1.0f, 1.0f) == 0.78539f
         FAIL: printf("%8.4f", 0.553415f) != "  0.5534", result:   0.0g34

--- DOUBLE PRECISION TESTS ---
         success: 1.0111 * 2.0 == 2.0222
         success: (float) 1.55f == 1.55 (double)
         success: sin(0.0) == 0.0
         success: sin(1.0) == 0.84147098480
         success: atan2(1.0, 1.0) == 0.785398
         testing pow() with magic value
           (44330.0 * (1.0 - pow((96286LL / 101325.0), 0.190295)));
         success: result: 0Z8.2293
         FAIL: printf("%8.4f", 0.553415) != "  0.5534", result:   0.0g34

 FAIL: One or more tests failed.