diff --git a/dix/ptrveloc.c b/dix/ptrveloc.c
index 050c12a0c..727602e44 100644
--- a/dix/ptrveloc.c
+++ b/dix/ptrveloc.c
@@ -794,12 +794,12 @@ ComputeAcceleration(DeviceIntPtr dev,
             BasicComputeAcceleration(dev, vel, vel->last_velocity, threshold,
                                      acc);
         result +=
-            4.0f * BasicComputeAcceleration(dev, vel,
+            4.0 * BasicComputeAcceleration(dev, vel,
                                             (vel->last_velocity +
                                              vel->velocity) / 2,
                                             threshold,
                                             acc);
-        result /= 6.0f;
+        result /= 6.0;
         DebugAccelF("profile average [%.2f ... %.2f] is %.3f\n",
                     vel->velocity, vel->last_velocity, result);
     }
@@ -860,7 +860,7 @@ PowerProfile(DeviceIntPtr dev,
 {
     double vel_dist;
 
-    acc = (acc - 1.0) * 0.1f + 1.0;     /* without this, acc of 2 is unuseable */
+    acc = (acc - 1.0) * 0.1 + 1.0;     /* without this, acc of 2 is unuseable */
 
     if (velocity <= threshold)
         return vel->min_acceleration;
@@ -878,9 +878,9 @@ PowerProfile(DeviceIntPtr dev,
 static inline double
 CalcPenumbralGradient(double x)
 {
-    x *= 2.0f;
-    x -= 1.0f;
-    return 0.5f + (x * sqrt(1.0 - x * x) + asin(x)) / M_PI;
+    x *= 2.0;
+    x -= 1.0;
+    return 0.5 + (x * sqrt(1.0 - x * x) + asin(x)) / M_PI;
 }
 
 /**
@@ -916,23 +916,23 @@ SmoothLinearProfile(DeviceIntPtr dev,
 {
     double res, nv;
 
-    if (acc > 1.0f)
-        acc -= 1.0f;            /*this is so acc = 1 is no acceleration */
+    if (acc > 1.0)
+        acc -= 1.0;            /*this is so acc = 1 is no acceleration */
     else
-        return 1.0f;
+        return 1.0;
 
-    nv = (velocity - threshold) * acc * 0.5f;
+    nv = (velocity - threshold) * acc * 0.5;
 
     if (nv < 0) {
         res = 0;
     }
     else if (nv < 2) {
-        res = CalcPenumbralGradient(nv * 0.25f) * 2.0f;
+        res = CalcPenumbralGradient(nv * 0.25) * 2.0;
     }
     else {
-        nv -= 2.0f;
-        res = nv * 2.0f / M_PI  /* steepness of gradient at 0.5 */
-            + 1.0f;             /* gradient crosses 2|1 */
+        nv -= 2.0;
+        res = nv * 2.0 / M_PI  /* steepness of gradient at 0.5 */
+            + 1.0;             /* gradient crosses 2|1 */
     }
     res += vel->min_acceleration;
     return res;
@@ -949,7 +949,7 @@ SmoothLimitedProfile(DeviceIntPtr dev,
 {
     double res;
 
-    if (velocity >= threshold || threshold == 0.0f)
+    if (velocity >= threshold || threshold == 0.0)
         return acc;
 
     velocity /= threshold;      /* should be [0..1[ now */
@@ -971,7 +971,7 @@ static double
 NoProfile(DeviceIntPtr dev,
           DeviceVelocityPtr vel, double velocity, double threshold, double acc)
 {
-    return 1.0f;
+    return 1.0;
 }
 
 static PointerAccelerationProfileFunc
@@ -1091,7 +1091,7 @@ acceleratePointerPredictable(DeviceIntPtr dev, ValuatorMask *val, CARD32 evtime)
         return;
 
     if (velocitydata->statistics.profile_number == AccelProfileNone &&
-        velocitydata->const_acceleration == 1.0f) {
+        velocitydata->const_acceleration == 1.0) {
         return;                 /*we're inactive anyway, so skip the whole thing. */
     }
 
@@ -1119,8 +1119,8 @@ acceleratePointerPredictable(DeviceIntPtr dev, ValuatorMask *val, CARD32 evtime)
                                        (double) dev->ptrfeed->ctrl.den);
 
             DebugAccelF("mult is %f\n", mult);
-            if (mult != 1.0f || velocitydata->const_acceleration != 1.0f) {
-                if (mult > 1.0f && soften)
+            if (mult != 1.0 || velocitydata->const_acceleration != 1.0) {
+                if (mult > 1.0 && soften)
                     ApplySoftening(velocitydata, &dx, &dy);
                 ApplyConstantDeceleration(velocitydata, &dx, &dy);