diff --git a/lib/msun/src/e_asinf.c b/lib/msun/src/e_asinf.c
index dc5d9ab4ccd2..deaabb6a326e 100644
--- a/lib/msun/src/e_asinf.c
+++ b/lib/msun/src/e_asinf.c
@@ -35,7 +35,7 @@ float
 __ieee754_asinf(float x)
 {
 	double s;
-	float t,w,p,q,c,r;
+	float t,w,p,q;
 	int32_t hx,ix;
 	GET_FLOAT_WORD(hx,x);
 	ix = hx&0x7fffffff;
diff --git a/lib/msun/src/e_jnf.c b/lib/msun/src/e_jnf.c
index 541cc8c0305f..3bbf7b71ed14 100644
--- a/lib/msun/src/e_jnf.c
+++ b/lib/msun/src/e_jnf.c
@@ -20,7 +20,6 @@ __FBSDID("$FreeBSD$");
 #include "math_private.h"
 
 static const float
-invsqrtpi=  5.6418961287e-01, /* 0x3f106ebb */
 two   =  2.0000000000e+00, /* 0x40000000 */
 one   =  1.0000000000e+00; /* 0x3F800000 */
 
diff --git a/lib/msun/src/e_rem_pio2.c b/lib/msun/src/e_rem_pio2.c
index c0e90b0e0cdb..f68df9af0b41 100644
--- a/lib/msun/src/e_rem_pio2.c
+++ b/lib/msun/src/e_rem_pio2.c
@@ -39,7 +39,6 @@ __FBSDID("$FreeBSD$");
 
 static const double
 zero =  0.00000000000000000000e+00, /* 0x00000000, 0x00000000 */
-half =  5.00000000000000000000e-01, /* 0x3FE00000, 0x00000000 */
 two24 =  1.67772160000000000000e+07, /* 0x41700000, 0x00000000 */
 invpio2 =  6.36619772367581382433e-01, /* 0x3FE45F30, 0x6DC9C883 */
 pio2_1  =  1.57079632673412561417e+00, /* 0x3FF921FB, 0x54400000 */
diff --git a/lib/msun/src/e_rem_pio2f.c b/lib/msun/src/e_rem_pio2f.c
index 4439dbcf9833..e07694cd5f51 100644
--- a/lib/msun/src/e_rem_pio2f.c
+++ b/lib/msun/src/e_rem_pio2f.c
@@ -36,7 +36,6 @@ __FBSDID("$FreeBSD$");
  */
 
 static const double
-half =  5.00000000000000000000e-01, /* 0x3FE00000, 0x00000000 */
 invpio2 =  6.36619772367581382433e-01, /* 0x3FE45F30, 0x6DC9C883 */
 pio2_1  =  1.57079631090164184570e+00, /* 0x3FF921FB, 0x50000000 */
 pio2_1t =  1.58932547735281966916e-08; /* 0x3E5110b4, 0x611A6263 */