added more host functions and tests

Change-Id: I9904e65e14c5479ba33d836c5c0b763cb5af71e3

include/hcc_detail/hip_runtime.h

@@ -123,17 +123,20 @@ __device__ float coshf(float x);
 __device__ float cyl_bessel_i0f(float x);
 __device__ float cyl_bessel_i1f(float x);
 __device__ float erfcf(float x);
-__device__ float erfcinvf(float y);
+__device__  float erfcinvf(float y);
+__host__ float erfcinvf(float y);
 __device__ float erfcxf(float x);
+__host__ float erfcxf(float x);
 __device__ float erff(float x);
 __device__ float erfinvf(float y);
+__host__ float erfinvf(float y);
 __device__ float exp10f(float x);
 __device__ float exp2f(float x);
 __device__ float expf(float x);
 __device__ float expm1f(float x);
 __device__ float fabsf(float x);
 __device__ float fdimf(float x, float y);
-__device__ float fdividef(float x, float y);
+__device__ __host__ float fdividef(float x, float y);
 __device__ float floorf(float x);
 __device__ float fmaf(float x, float y, float z);
 __device__ float fmaxf(float x, float y);