diff --git a/simd/arm/jfdctint-neon.c b/simd/arm/jfdctint-neon.c
index e770c706..eee41d9d 100644
--- a/simd/arm/jfdctint-neon.c
+++ b/simd/arm/jfdctint-neon.c
@@ -169,29 +169,29 @@ void jsimd_fdct_islow_neon(DCTELEM *data)
   z5_l = vmlal_lane_s16(z5_l, vget_low_s16(z4), consts.val[1], 1);
   z5_h = vmlal_lane_s16(z5_h, vget_high_s16(z4), consts.val[1], 1);
 
-  /* sqrt(2) * (-c1+c3+c5-c7) */
+  /* sqrt(2) * (-c1 + c3 + c5 - c7) */
   int32x4_t tmp4_l = vmull_lane_s16(vget_low_s16(tmp4), consts.val[0], 0);
   int32x4_t tmp4_h = vmull_lane_s16(vget_high_s16(tmp4), consts.val[0], 0);
-  /* sqrt(2) * ( c1+c3-c5+c7) */
+  /* sqrt(2) * ( c1 + c3 - c5 + c7) */
   int32x4_t tmp5_l = vmull_lane_s16(vget_low_s16(tmp5), consts.val[2], 1);
   int32x4_t tmp5_h = vmull_lane_s16(vget_high_s16(tmp5), consts.val[2], 1);
-  /* sqrt(2) * ( c1+c3+c5-c7) */
+  /* sqrt(2) * ( c1 + c3 + c5 - c7) */
   int32x4_t tmp6_l = vmull_lane_s16(vget_low_s16(tmp6), consts.val[2], 3);
   int32x4_t tmp6_h = vmull_lane_s16(vget_high_s16(tmp6), consts.val[2], 3);
-  /* sqrt(2) * ( c1+c3-c5-c7) */
+  /* sqrt(2) * ( c1 + c3 - c5 - c7) */
   int32x4_t tmp7_l = vmull_lane_s16(vget_low_s16(tmp7), consts.val[1], 2);
   int32x4_t tmp7_h = vmull_lane_s16(vget_high_s16(tmp7), consts.val[1], 2);
 
-  /* sqrt(2) * (c7-c3) */
+  /* sqrt(2) * (c7 - c3) */
   z1_l = vmull_lane_s16(vget_low_s16(z1), consts.val[1], 0);
   z1_h = vmull_lane_s16(vget_high_s16(z1), consts.val[1], 0);
-  /* sqrt(2) * (-c1-c3) */
+  /* sqrt(2) * (-c1 - c3) */
   int32x4_t z2_l = vmull_lane_s16(vget_low_s16(z2), consts.val[2], 2);
   int32x4_t z2_h = vmull_lane_s16(vget_high_s16(z2), consts.val[2], 2);
-  /* sqrt(2) * (-c3-c5) */
+  /* sqrt(2) * (-c3 - c5) */
   int32x4_t z3_l = vmull_lane_s16(vget_low_s16(z3), consts.val[2], 0);
   int32x4_t z3_h = vmull_lane_s16(vget_high_s16(z3), consts.val[2], 0);
-  /* sqrt(2) * (c5-c3) */
+  /* sqrt(2) * (c5 - c3) */
   int32x4_t z4_l = vmull_lane_s16(vget_low_s16(z4), consts.val[0], 1);
   int32x4_t z4_h = vmull_lane_s16(vget_high_s16(z4), consts.val[0], 1);
 
@@ -306,29 +306,29 @@ void jsimd_fdct_islow_neon(DCTELEM *data)
   z5_l = vmlal_lane_s16(z5_l, vget_low_s16(z4), consts.val[1], 1);
   z5_h = vmlal_lane_s16(z5_h, vget_high_s16(z4), consts.val[1], 1);
 
-  /* sqrt(2) * (-c1+c3+c5-c7) */
+  /* sqrt(2) * (-c1 + c3 + c5 - c7) */
   tmp4_l = vmull_lane_s16(vget_low_s16(tmp4), consts.val[0], 0);
   tmp4_h = vmull_lane_s16(vget_high_s16(tmp4), consts.val[0], 0);
-  /* sqrt(2) * ( c1+c3-c5+c7) */
+  /* sqrt(2) * ( c1 + c3 - c5 + c7) */
   tmp5_l = vmull_lane_s16(vget_low_s16(tmp5), consts.val[2], 1);
   tmp5_h = vmull_lane_s16(vget_high_s16(tmp5), consts.val[2], 1);
-  /* sqrt(2) * ( c1+c3+c5-c7) */
+  /* sqrt(2) * ( c1 + c3 + c5 - c7) */
   tmp6_l = vmull_lane_s16(vget_low_s16(tmp6), consts.val[2], 3);
   tmp6_h = vmull_lane_s16(vget_high_s16(tmp6), consts.val[2], 3);
-  /* sqrt(2) * ( c1+c3-c5-c7) */
+  /* sqrt(2) * ( c1 + c3 -c5 - c7) */
   tmp7_l = vmull_lane_s16(vget_low_s16(tmp7), consts.val[1], 2);
   tmp7_h = vmull_lane_s16(vget_high_s16(tmp7), consts.val[1], 2);
 
-  /* sqrt(2) * (c7-c3) */
+  /* sqrt(2) * (c7 - c3) */
   z1_l = vmull_lane_s16(vget_low_s16(z1), consts.val[1], 0);
   z1_h = vmull_lane_s16(vget_high_s16(z1), consts.val[1], 0);
-  /* sqrt(2) * (-c1-c3) */
+  /* sqrt(2) * (-c1 - c3) */
   z2_l = vmull_lane_s16(vget_low_s16(z2), consts.val[2], 2);
   z2_h = vmull_lane_s16(vget_high_s16(z2), consts.val[2], 2);
-  /* sqrt(2) * (-c3-c5) */
+  /* sqrt(2) * (-c3 - c5) */
   z3_l = vmull_lane_s16(vget_low_s16(z3), consts.val[2], 0);
   z3_h = vmull_lane_s16(vget_high_s16(z3), consts.val[2], 0);
-  /* sqrt(2) * (c5-c3) */
+  /* sqrt(2) * (c5 - c3) */
   z4_l = vmull_lane_s16(vget_low_s16(z4), consts.val[0], 1);
   z4_h = vmull_lane_s16(vget_high_s16(z4), consts.val[0], 1);