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      1 // Copyright 2009 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 #include "textflag.h"
      6 
      7 // func Sqrt(x float64) float64
      8 TEXT Sqrt(SB), NOSPLIT, $0
      9 	XORPS  X0, X0 // break dependency
     10 	SQRTSD x+0(FP), X0
     11 	MOVSD  X0, ret+8(FP)
     12 	RET
     13