Update

sqrt.md

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+# Square Root
+
+TODO
+
+
+
+The following is an [approximation](approximation.md) of integer square root in [C](c.md) that has acceptable accuracy to about 1 million (maximum error from 1000 to 1000000 is about 7%): { Painstakingly made by me. ~drummyfish }
+
+```
+int32_t sqrtApprox(int32_t x)
+{
+  return
+    (x < 1024) ?
+    (-2400 / (x + 120) + x / 64 + 20) :
+      ((x < 93580) ?
+       (-1000000 / (x + 8000) + x / 512 + 142) :
+       (-75000000 / (x + 160000) + x / 2048 + 565));
+}
+```