1 files changed, 54 insertions, 0 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/config/arm/_fixsfdi.c b/gcc-4.2.1-5666.3/gcc/config/arm/_fixsfdi.c
new file mode 100644
index 000000000..f248c95a4
--- /dev/null
+++ b/gcc-4.2.1-5666.3/gcc/config/arm/_fixsfdi.c
@@ -0,0 +1,54 @@
+/* APPLE LOCAL file 5316398 improved float/double -> int64 functions */
+#include <stdint.h>
+
+int64_t
+__fixsfdi (float x)
+{
+  union { float f; uint32_t u; } u = {x};
+  uint32_t fabsx = u.u & 0x7fffffffU;
+  uint32_t exp = fabsx >> 23;
+  int64_t result = 0;
+
+  /* for small ints, overflow and NaN, the int32_t converter works fine 
+     if( |x| < 0x1.0p31f || |x| >= 1.0p64f || isnan(x) ) unsigned
+     compare */
+  if (exp - (127U + 31U) >= (63U - 31U))
+    {
+      if (exp > (127 + 31))
+	{
+	  if (x == -0x1.0p63f)
+	    return 0x8000000000000000LL;
+
+	  uint32_t r = (int32_t) x;
+	  result = (int64_t) r << 32;
+	  r = (r << 1) | (r & 1);
+	  result |= r;
+	  return result;
+	}
+
+      /* small number. Regular int32_t conversion will work fine here. */
+      result = (int32_t) x;
+      return result;
+    }
+
+  /* 0x1.0p31 <= |x| <0x1.0p64, x is always an integer in this range */
+
+  /* convert float to fixed */
+  result = (fabsx & 0x007fffffU) | 0x00800000;
+
+  /* signMask = x < 0.0f ? -1LL : 0 */
+  int64_t signMask = (int64_t) u.u << 32;
+  signMask >>= 63;
+
+  /* Calculate shift value to move fixed point to right place */
+  int32_t leftShift = exp - (127 + 23);
+
+  /* move the fixed point into place */
+  result <<= leftShift;
+
+  /* Fix sign */
+  result ^= signMask;
+  result -= signMask;
+
+  return result;
+}