diff --git a/src/math/modfl.c b/src/math/modfl.c
index f736bba4..4b03a4be 100644
--- a/src/math/modfl.c
+++ b/src/math/modfl.c
@@ -3,7 +3,12 @@
 #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
 long double modfl(long double x, long double *iptr)
 {
-	return modf(x, (double *)iptr);
+	double d;
+	long double r;
+
+	r = modf(x, &d);
+	*iptr = d;
+	return r;
 }
 #elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
 #if LDBL_MANT_DIG == 64
diff --git a/src/math/sincosl.c b/src/math/sincosl.c
index 2c600801..d3ac1c4c 100644
--- a/src/math/sincosl.c
+++ b/src/math/sincosl.c
@@ -4,7 +4,10 @@
 #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
 void sincosl(long double x, long double *sin, long double *cos)
 {
-	sincos(x, (double *)sin, (double *)cos);
+	double sind, cosd;
+	sincos(x, &sind, &cosd);
+	*sin = sind;
+	*cos = cosd;
 }
 #elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
 void sincosl(long double x, long double *sin, long double *cos)