estimateSqrt32   2115 lib/libkern/softfloat.c     zSig = estimateSqrt32( aExp, aSig ) + 2;
estimateSqrt32   3068 lib/libkern/softfloat.c     zSig = estimateSqrt32( aExp, aSig>>21 );
estimateSqrt32   4022 lib/libkern/softfloat.c     zSig0 = estimateSqrt32( aExp, aSig0>>32 );
estimateSqrt32   5168 lib/libkern/softfloat.c     zSig0 = estimateSqrt32( aExp, aSig0>>17 );