diff --git a/lib/msun/src/e_exp.c b/lib/msun/src/e_exp.c
index 94c9769da38d..dd04d8e839d5 100644
--- a/lib/msun/src/e_exp.c
+++ b/lib/msun/src/e_exp.c
@@ -145,9 +145,9 @@ __ieee754_exp(double x)	/* default IEEE double exp */
     /* x is now in primary range */
 	t  = x*x;
 	if(k >= -1021)
-	    INSERT_WORDS(twopk,0x3ff00000+(k<<20), 0);
+	    INSERT_WORDS(twopk,((u_int32_t)(0x3ff+k))<<20, 0);
 	else
-	    INSERT_WORDS(twopk,0x3ff00000+((k+1000)<<20), 0);
+	    INSERT_WORDS(twopk,((u_int32_t)(0x3ff+(k+1000)))<<20, 0);
 	c  = x - t*(P1+t*(P2+t*(P3+t*(P4+t*P5))));
 	if(k==0) 	return one-((x*c)/(c-2.0)-x); 
 	else 		y = one-((lo-(x*c)/(2.0-c))-hi);
diff --git a/lib/msun/src/e_expf.c b/lib/msun/src/e_expf.c
index b1fe2c5371ac..4903d55c5ab3 100644
--- a/lib/msun/src/e_expf.c
+++ b/lib/msun/src/e_expf.c
@@ -83,9 +83,9 @@ __ieee754_expf(float x)
     /* x is now in primary range */
 	t  = x*x;
 	if(k >= -125)
-	    SET_FLOAT_WORD(twopk,0x3f800000+(k<<23));
+	    SET_FLOAT_WORD(twopk,((u_int32_t)(0x7f+k))<<23);
 	else
-	    SET_FLOAT_WORD(twopk,0x3f800000+((k+100)<<23));
+	    SET_FLOAT_WORD(twopk,((u_int32_t)(0x7f+(k+100)))<<23);
 	c  = x - t*(P1+t*P2);
 	if(k==0) 	return one-((x*c)/(c-(float)2.0)-x);
 	else 		y = one-((lo-(x*c)/((float)2.0-c))-hi);
diff --git a/lib/msun/src/s_expm1.c b/lib/msun/src/s_expm1.c
index 37998a3871aa..844f10360fe6 100644
--- a/lib/msun/src/s_expm1.c
+++ b/lib/msun/src/s_expm1.c
@@ -188,7 +188,7 @@ expm1(double x)
 	e  = hxs*((r1-t)/(6.0 - x*t));
 	if(k==0) return x - (x*e-hxs);		/* c is 0 */
 	else {
-	    INSERT_WORDS(twopk,0x3ff00000+(k<<20),0);	/* 2^k */
+	    INSERT_WORDS(twopk,((u_int32_t)(0x3ff+k))<<20,0);	/* 2^k */
 	    e  = (x*(e-c)-c);
 	    e -= hxs;
 	    if(k== -1) return 0.5*(x-e)-0.5;
diff --git a/lib/msun/src/s_expm1f.c b/lib/msun/src/s_expm1f.c
index c0a39340fc04..b47daac2eb35 100644
--- a/lib/msun/src/s_expm1f.c
+++ b/lib/msun/src/s_expm1f.c
@@ -94,7 +94,7 @@ expm1f(float x)
 	e  = hxs*((r1-t)/((float)6.0 - x*t));
 	if(k==0) return x - (x*e-hxs);		/* c is 0 */
 	else {
-	    SET_FLOAT_WORD(twopk,0x3f800000+(k<<23));	/* 2^k */
+	    SET_FLOAT_WORD(twopk,((u_int32_t)(0x7f+k))<<23);	/* 2^k */
 	    e  = (x*(e-c)-c);
 	    e -= hxs;
 	    if(k== -1) return (float)0.5*(x-e)-(float)0.5;