Renable frexp(f) device math function

Change-Id: I53c022b8ddf38cd17ddb42eba457b9020db66395

include/hip/hcc_detail/math_functions.h

@@ -60,7 +60,7 @@ __device__ float fmaf(float x, float y, float z);
 __device__ float fmaxf(float x, float y);
 __device__ float fminf(float x, float y);
 __device__ float fmodf(float x, float y);
-//__device__ float frexpf(float x, int* nptr);
+__device__ float frexpf(float x, int* nptr);
 __device__ float hypotf(float x, float y);
 __device__ float ilogbf(float x);
 __device__ int isfinite(float a);
@@ -146,7 +146,7 @@ __device__ double fma(double x, double y, double z);
 __device__ double fmax(double x, double y);
 __device__ double fmin(double x, double y);
 __device__ double fmod(double x, double y);
-//__device__ double frexp(double x, int *nptr);
+__device__ double frexp(double x, int *nptr);
 __device__ double hypot(double x, double y);
 __device__ double ilogb(double x);
 __device__ int isfinite(double x);

tests/src/deviceLib/hipDoublePrecisionMathDevice.cpp

@@ -69,7 +69,7 @@ __device__ void double_precision_math_functions()
     fmax(0.0, 0.0);
     fmin(0.0, 0.0);
     fmod(0.0, 1.0);
-//    frexp(0.0, &iX);
+    frexp(0.0, &iX);
     hypot(1.0, 0.0);
     ilogb(1.0);
     isfinite(0.0);

tests/src/deviceLib/hipSinglePrecisionMathDevice.cpp

@@ -70,7 +70,7 @@ __device__ void single_precision_math_functions()
     fmaxf(0.0f, 0.0f);
     fminf(0.0f, 0.0f);
     fmodf(0.0f, 1.0f);
-    //frexpf(0.0f, &iX);
+    frexpf(0.0f, &iX);
     hypotf(1.0f, 0.0f);
     ilogbf(1.0f);
     isfinite(0.0f);