floatPower2

1 files changed, 10 insertions, 1 deletions

diff --git a/bits.c b/bits.c
index 0e2935d..c299fe0 100644
--- a/bits.c
+++ b/bits.c
@@ -311,5 +311,14 @@ int float64_f2i(unsigned uf1, unsigned uf2) {
  *   Difficulty: 4
  */
 unsigned floatPower2(int x) {
-    return 2;
+    if (x < -149) {
+        return 0;
+    }
+    if (x < -126) {
+        return 1 << (x + 149);
+    }
+    if (x <= 127) {
+        return (x + 127) << 23;
+    }
+    return 0x7F800000;
 }