diff --git a/libc/math/lib_libexpi.c b/libc/math/lib_libexpi.c
index bcb5622130..3cd5f8f6d7 100644
--- a/libc/math/lib_libexpi.c
+++ b/libc/math/lib_libexpi.c
@@ -52,13 +52,12 @@
 #define M_E128  (M_E64  * M_E64)
 #define M_E256  (M_E128 * M_E128)
 #define M_E512  (M_E256 * M_E256)
-#define M_E1024 (M_E512 * M_E512)
 
 /****************************************************************************
  * Private Data
  ****************************************************************************/
 
-static const double g_expi_square_tbl[11] =
+static const double g_expi_square_tbl[] =
 {
   M_E,          /* e^1 */
   M_E2,         /* e^2 */
@@ -69,8 +68,7 @@ static const double g_expi_square_tbl[11] =
   M_E64,        /* e^64 */
   M_E128,       /* e^128 */
   M_E256,       /* e^256 */
-  M_E512,       /* e^512 */
-  M_E1024,      /* e^1024 */
+  M_E512        /* e^512 */
 };
 
 /****************************************************************************
@@ -82,7 +80,9 @@ double lib_expi(size_t n)
   size_t i;
   double val;
 
-  if (n > 1024)
+  /* The largest calculable value for n is floor(ln(DBL_MAX)) */
+
+  if (n > 709)
     {
       return INFINITY;
     }
diff --git a/libc/math/lib_libexpif.c b/libc/math/lib_libexpif.c
index 1ab9b90f43..22c60f48d1 100644
--- a/libc/math/lib_libexpif.c
+++ b/libc/math/lib_libexpif.c
@@ -58,7 +58,7 @@
  *(3.402823e+38).
  */
 
-static const float g_expif_square_tbl[7] =
+static const float g_expif_square_tbl[] =
 {
   (float)M_E,    /* e^1 */
   (float)M_E2,   /* e^2 */
@@ -66,7 +66,7 @@ static const float g_expif_square_tbl[7] =
   (float)M_E8,   /* e^8 */
   (float)M_E16,  /* e^16 */
   (float)M_E32,  /* e^32 */
-  (float)M_E64,  /* e^64 */
+  (float)M_E64   /* e^64 */
 };
 
 /****************************************************************************
@@ -78,7 +78,9 @@ float lib_expif(size_t n)
   size_t i;
   float val;
 
-  if (n >= 128)
+  /* The largest calculable value for n is floor(ln(FLT_MAX)) */
+
+  if (n > 88)
     {
       return INFINITY_F;
     }