diff --git a/include/hip/devicelib/half/half2_math.hh b/include/hip/devicelib/half/half2_math.hh
index f1da2574f..52c051b02 100644
--- a/include/hip/devicelib/half/half2_math.hh
+++ b/include/hip/devicelib/half/half2_math.hh
@@ -26,6 +26,15 @@
 
 #include <hip/devicelib/macros.hh>
 
+extern "C++" {
+
+extern __device__ api_half2 rint(api_half2 x);
+
+}
+
+static inline __device__ api_half2 rint_2h(api_half2 x) { return rint(x); }
+
+
 //__device__ __half2 h2ceil ( const __half2 h )
 //__device__ __half2 h2cos ( const __half2 a )
 //__device__ __half2 h2exp ( const __half2 a )
diff --git a/include/hip/devicelib/half/half_math.hh b/include/hip/devicelib/half/half_math.hh
index e3da2ca38..08131dfea 100644
--- a/include/hip/devicelib/half/half_math.hh
+++ b/include/hip/devicelib/half/half_math.hh
@@ -26,6 +26,16 @@
 
 #include <hip/devicelib/macros.hh>
 
+
+extern "C++" {
+
+extern __device__ api_half rint(api_half x);
+
+}
+
+static inline __device__ api_half rint_h(api_half x) { return rint(x); }
+
+
 //__device__ __half hceil ( const __half h )
 //__device__ __half hcos ( const __half a )
 //__device__ __half hexp ( const __half a )
diff --git a/include/hip/spirv_hip_fp16.h b/include/hip/spirv_hip_fp16.h
index d364f1711..49ed30015 100644
--- a/include/hip/spirv_hip_fp16.h
+++ b/include/hip/spirv_hip_fp16.h
@@ -377,11 +377,15 @@ inline __host__ __device__ __half2 make_half2(__half x, __half y) {
   return __half2{x, y};
 }
 
-inline __device__ __half __low2half(__half2 x) {
+inline __host__ __device__ __half
+__low2half (__half2 x)
+{
   return __half{__half_raw{static_cast<__half2_raw>(x).data.x}};
 }
 
-inline __device__ __half __high2half(__half2 x) {
+inline __host__ __device__ __half
+__high2half (__half2 x)
+{
   return __half{__half_raw{static_cast<__half2_raw>(x).data.y}};
 }
 
@@ -660,6 +664,49 @@ inline __device__ __half2 __ldcg(const __half2* ptr) { return *ptr; }
 inline __device__ __half2 __ldca(const __half2* ptr) { return *ptr; }
 inline __device__ __half2 __ldcs(const __half2* ptr) { return *ptr; }
 
+// Store primitives
+inline __device__ void
+__stg (__half *ptr, const __half value)
+{
+  *ptr = value;
+}
+inline __device__ void
+__stcg (__half *ptr, const __half value)
+{
+  *ptr = value;
+}
+inline __device__ void
+__stca (__half *ptr, const __half value)
+{
+  *ptr = value;
+}
+inline __device__ void
+__stcs (__half *ptr, const __half value)
+{
+  *ptr = value;
+}
+
+inline __device__ void
+__stg (__half2 *ptr, const __half2 value)
+{
+  *ptr = value;
+}
+inline __device__ void
+__stcg (__half2 *ptr, const __half2 value)
+{
+  *ptr = value;
+}
+inline __device__ void
+__stca (__half2 *ptr, const __half2 value)
+{
+  *ptr = value;
+}
+inline __device__ void
+__stcs (__half2 *ptr, const __half2 value)
+{
+  *ptr = value;
+}
+
 // Relations
 inline __device__ bool __heq(__half x, __half y) {
   return static_cast<__half_raw>(x).data == static_cast<__half_raw>(y).data;
@@ -763,6 +810,11 @@ inline __device__ __half __clamp_01(__half x) {
   return r;
 }
 
+inline __device__ __half
+__habs (__half x)
+{
+  return __half_raw{ fabs_h (static_cast<__half_raw> (x).data) };
+}
 inline __device__ __half __hadd(__half x, __half y) {
   return __half_raw{static_cast<_hip_f16>(static_cast<__half_raw>(x).data +
                                           static_cast<__half_raw>(y).data)};
@@ -797,6 +849,11 @@ inline __device__ __half __hdiv(__half x, __half y) {
                                           static_cast<__half_raw>(y).data)};
 }
 
+inline __device__ __half2
+__habs2 (__half2 x)
+{
+  return __half2_raw{ fabs_2h (static_cast<__half2_raw> (x).data) };
+}
 inline __device__ __half2 __hadd2(__half2 x, __half2 y) {
   return __half2_raw{static_cast<__half2_raw>(x).data +
                      static_cast<__half2_raw>(y).data};
@@ -846,9 +903,11 @@ inline __device__ __half hceil(__half x) {
 inline __device__ __half hfloor(__half x) {
   return __half_raw{floor_h(static_cast<__half_raw>(x).data)};
 }
-// inline __device__ __half hrint(__half x) {
-//   return __half_raw{rint_h(static_cast<__half_raw>(x).data)};
-// }
+inline __device__ __half
+hrint (__half x)
+{
+  return __half_raw{ rint_h (static_cast<__half_raw> (x).data) };
+}
 inline __device__ __half hsin(__half x) {
   return __half_raw{sin_h(static_cast<__half_raw>(x).data)};
 }
@@ -873,11 +932,23 @@ inline __device__ __half hlog(__half x) {
 inline __device__ __half hlog10(__half x) {
   return __half_raw{log10_h(static_cast<__half_raw>(x).data)};
 }
+inline __device__ __half
+hmin (__half x, __half y)
+{
+  return __half_raw{ fmin_h (static_cast<__half_raw> (x).data,
+                             static_cast<__half_raw> (y).data) };
+}
+inline __device__ __half
+hmax (__half x, __half y)
+{
+  return __half_raw{ fmax_h (static_cast<__half_raw> (x).data,
+                             static_cast<__half_raw> (y).data) };
+}
 inline __device__ __half hrcp(__half x) {
-  return __half_raw{// TODO
-                    // recip_h(static_cast<__half_raw>(x).data)};
-                    log10_h(static_cast<__half_raw>(x).data)};
+  return __half_raw{ static_cast<_hip_f16> (
+      __half_raw{ 1 }.data / static_cast<__half_raw> (x).data) };
 }
+
 inline __device__ __half hrsqrt(__half x) {
   return __half_raw{rsqrt_h(static_cast<__half_raw>(x).data)};
 }
@@ -901,8 +972,11 @@ inline __device__ __half2 h2ceil(__half2 x) { return __half2_raw{ceil_2h(x)}; }
 inline __device__ __half2 h2floor(__half2 x) {
   return __half2_raw{floor_2h(x)};
 }
-// inline __device__ __half2 h2rint(__half2 x) { return __half2_raw{rint_2h(x)};
-// }
+inline __device__ __half2
+h2rint (__half2 x)
+{
+  return __half2_raw{ rint_2h (x) };
+}
 inline __device__ __half2 h2sin(__half2 x) { return __half2_raw{sin_2h(x)}; }
 inline __device__ __half2 h2cos(__half2 x) { return __half2_raw{cos_2h(x)}; }
 inline __device__ __half2 h2exp(__half2 x) { return __half2_raw{exp_2h(x)}; }
@@ -913,9 +987,22 @@ inline __device__ __half2 h2exp10(__half2 x) {
 inline __device__ __half2 h2log2(__half2 x) { return __half2_raw{log2_2h(x)}; }
 inline __device__ __half2 h2log(__half2 x) { return log_2h(x); }
 inline __device__ __half2 h2log10(__half2 x) { return log10_2h(x); }
-inline __device__ __half2 h2rcp(__half2 x) { return log10_2h(x); }
-// TODO
-//__half2 h2rcp(__half2 x) { return recip_2h(x); }
+inline __device__ __half2
+hmin2 (__half2 x, __half2 y)
+{
+  return fmin_2h (x, y);
+}
+inline __device__ __half2
+hmax2 (__half2 x, __half2 y)
+{
+  return fmax_2h (x, y);
+}
+inline __device__ __half2
+h2rcp (__half2 x)
+{
+  return __half2_raw{ static_cast<_hip_f16_2> (
+      __half2_raw{ 1 }.data / static_cast<__half2_raw> (x).data) };
+}
 inline __device__ __half2 h2rsqrt(__half2 x) { return rsqrt_2h(x); }
 inline __device__ __half2 h2sqrt(__half2 x) { return sqrt_2h(x); }
 inline __device__ __half2 __hisinf2(__half2 x) {