Modify atan2 to use wrapping_ ops

mb64 · mb64 · commit c7aa961fffbc · 2018-08-01T15:37:15.000-04:00
diff --git a/src/math/atan2.rs b/src/math/atan2.rs
@@ -91,12 +91,12 @@ pub fn atan2(y: f64, x: f64) -> f64 {
         }
     }
     /* |y/x| > 0x1p64 */
-    if ix + (64 << 20) < iy || iy == 0x7ff00000 {
+    if ix.wrapping_add(64 << 20) < iy || iy == 0x7ff00000 {
         return if m & 1 != 0 { -PI / 2.0 } else { PI / 2.0 };
     }
 
     /* z = atan(|y/x|) without spurious underflow */
-    let z = if (m & 2 != 0) && iy + (64 << 20) < ix {
+    let z = if (m & 2 != 0) && iy.wrapping_add(64 << 20) < ix {
         /* |y/x| < 0x1p-64, x<0 */
         0.0
     } else {

Original file line number	Diff line number	Diff line change
`@@ -91,12 +91,12 @@ pub fn atan2(y: f64, x: f64) -> f64 {`
`91`	`91`	`}`
`92`	`92`	`}`
`93`	`93`	`/* \|y/x\| > 0x1p64 */`
`94`		`- if ix + (64 << 20) < iy \|\| iy == 0x7ff00000 {`
	`94`	`+ if ix.wrapping_add(64 << 20) < iy \|\| iy == 0x7ff00000 {`
`95`	`95`	`return if m & 1 != 0 { -PI / 2.0 } else { PI / 2.0 };`
`96`	`96`	`}`
`97`	`97`
`98`	`98`	`/* z = atan(\|y/x\|) without spurious underflow */`
`99`		`- let z = if (m & 2 != 0) && iy + (64 << 20) < ix {`
	`99`	`+ let z = if (m & 2 != 0) && iy.wrapping_add(64 << 20) < ix {`
`100`	`100`	`/* \|y/x\| < 0x1p-64, x<0 */`
`101`	`101`	`0.0`
`102`	`102`	`} else {`