diff --git a/c10/metal/special_math.h b/c10/metal/special_math.h
index 7f6dc5b76f2..309f57907e6 100644
--- a/c10/metal/special_math.h
+++ b/c10/metal/special_math.h
@@ -94,21 +94,22 @@ T i0(T _x) {
      *
      * lim(x->0){ exp(-x) I0(x) } = 1.
      */
-    const float A[] = {-4.41534164647933937950E-18, 3.33079451882223809783E-17,
-                       -2.43127984654795469359E-16, 1.71539128555513303061E-15,
-                       -1.16853328779934516808E-14, 7.67618549860493561688E-14,
-                       -4.85644678311192946090E-13, 2.95505266312963983461E-12,
-                       -1.72682629144155570723E-11, 9.67580903537323691224E-11,
-                       -5.18979560163526290666E-10, 2.65982372468238665035E-9,
-                       -1.30002500998624804212E-8,  6.04699502254191894932E-8,
-                       -2.67079385394061173391E-7,  1.11738753912010371815E-6,
-                       -4.41673835845875056359E-6,  1.64484480707288970893E-5,
-                       -5.75419501008210370398E-5,  1.88502885095841655729E-4,
-                       -5.76375574538582365885E-4,  1.63947561694133579842E-3,
-                       -4.32430999505057594430E-3,  1.05464603945949983183E-2,
-                       -2.37374148058994688156E-2,  4.93052842396707084878E-2,
-                       -9.49010970480476444210E-2,  1.71620901522208775349E-1,
-                       -3.04682672343198398683E-1,  6.76795274409476084995E-1};
+    constexpr float A[] = {
+        -4.41534164647933937950E-18, 3.33079451882223809783E-17,
+        -2.43127984654795469359E-16, 1.71539128555513303061E-15,
+        -1.16853328779934516808E-14, 7.67618549860493561688E-14,
+        -4.85644678311192946090E-13, 2.95505266312963983461E-12,
+        -1.72682629144155570723E-11, 9.67580903537323691224E-11,
+        -5.18979560163526290666E-10, 2.65982372468238665035E-9,
+        -1.30002500998624804212E-8,  6.04699502254191894932E-8,
+        -2.67079385394061173391E-7,  1.11738753912010371815E-6,
+        -4.41673835845875056359E-6,  1.64484480707288970893E-5,
+        -5.75419501008210370398E-5,  1.88502885095841655729E-4,
+        -5.76375574538582365885E-4,  1.63947561694133579842E-3,
+        -4.32430999505057594430E-3,  1.05464603945949983183E-2,
+        -2.37374148058994688156E-2,  4.93052842396707084878E-2,
+        -9.49010970480476444210E-2,  1.71620901522208775349E-1,
+        -3.04682672343198398683E-1,  6.76795274409476084995E-1};
 
     auto y = (x / 2.0) - 2.0;
     return static_cast<T>(::metal::exp(x) * chbevl(y, A, 30));
@@ -120,19 +121,20 @@ T i0(T _x) {
    *
    * lim(x->inf){ exp(-x) sqrt(x) I0(x) } = 1/sqrt(2pi).
    */
-  const float B[] = {-7.23318048787475395456E-18, -4.83050448594418207126E-18,
-                     4.46562142029675999901E-17,  3.46122286769746109310E-17,
-                     -2.82762398051658348494E-16, -3.42548561967721913462E-16,
-                     1.77256013305652638360E-15,  3.81168066935262242075E-15,
-                     -9.55484669882830764870E-15, -4.15056934728722208663E-14,
-                     1.54008621752140982691E-14,  3.85277838274214270114E-13,
-                     7.18012445138366623367E-13,  -1.79417853150680611778E-12,
-                     -1.32158118404477131188E-11, -3.14991652796324136454E-11,
-                     1.18891471078464383424E-11,  4.94060238822496958910E-10,
-                     3.39623202570838634515E-9,   2.26666899049817806459E-8,
-                     2.04891858946906374183E-7,   2.89137052083475648297E-6,
-                     6.88975834691682398426E-5,   3.36911647825569408990E-3,
-                     8.04490411014108831608E-1};
+  constexpr float B[] = {
+      -7.23318048787475395456E-18, -4.83050448594418207126E-18,
+      4.46562142029675999901E-17,  3.46122286769746109310E-17,
+      -2.82762398051658348494E-16, -3.42548561967721913462E-16,
+      1.77256013305652638360E-15,  3.81168066935262242075E-15,
+      -9.55484669882830764870E-15, -4.15056934728722208663E-14,
+      1.54008621752140982691E-14,  3.85277838274214270114E-13,
+      7.18012445138366623367E-13,  -1.79417853150680611778E-12,
+      -1.32158118404477131188E-11, -3.14991652796324136454E-11,
+      1.18891471078464383424E-11,  4.94060238822496958910E-10,
+      3.39623202570838634515E-9,   2.26666899049817806459E-8,
+      2.04891858946906374183E-7,   2.89137052083475648297E-6,
+      6.88975834691682398426E-5,   3.36911647825569408990E-3,
+      8.04490411014108831608E-1};
 
   return static_cast<T>(
       (::metal::exp(x) * chbevl(32.0 / x - 2.0, B, 25)) / ::metal::sqrt(x));
@@ -148,7 +150,7 @@ T i1(T _x) {
   if (x <= 8.0) {
     // Chebyshev coefficients for exp(-x) i1(x) in the internal [0, 8]
     //   lim(x->0){ exp(-x) i1(x) / x } = 1/2
-    const float coefficients[] = {
+    constexpr float coefficients[] = {
         2.77791411276104639959E-18, -2.11142121435816608115E-17,
         1.55363195773620046921E-16, -1.10559694773538630805E-15,
         7.60068429473540693410E-15, -5.04218550472791168711E-14,
@@ -172,7 +174,7 @@ T i1(T _x) {
   // Chebyshev coefficients for exp(-x) sqrt(x) i1(x)
   //   in the inverted interval [8, infinity]
   //   lim(x->inf){ exp(-x) sqrt(x) i1(x) } = 1/sqrt(2pi)
-  const float coefficients[] = {
+  constexpr float coefficients[] = {
       7.51729631084210481353E-18,  4.41434832307170791151E-18,
       -4.65030536848935832153E-17, -3.20952592199342395980E-17,
       2.96262899764595013876E-16,  3.30820231092092828324E-16,