r = __ieee754_sqrtf (t);  __real__ q = __imag__ x / (2.0 * r); __imag__ q = r;   res = 0.5 * (q + q / x);
__real__ res = r; __imag__ res = __copysignf (s, __imag__ x);
__csqrtf (__complex__ float x){  __complex__ float res;  int rcls = fpclassify (__real__ x);  int icls = fpclassify (__imag__ x);  if (rcls <= FP_INFINITE || icls <= FP_INFINITE)    {      if (icls == FP_INFINITE)	{	  __real__ res = HUGE_VALF;	  __imag__ res = __imag__ x;	}      else if (rcls == FP_INFINITE)	{	  if (__real__ x < 0.0)	    {	      __real__ res = icls == FP_NAN ? __nanf ("") : 0;	      __imag__ res = __copysignf (HUGE_VALF, __imag__ x);	    }	  else	    {	      __real__ res = __real__ x;	      __imag__ res = (icls == FP_NAN			      ? __nanf ("") : __copysignf (0.0, __imag__ x));	    }	}      else	{	  __real__ res = __nanf ("");	  __imag__ res = __nanf ("");	}    }  else    {      if (icls == FP_ZERO)	{	  if (__real__ x < 0.0)	    {	      __real__ res = 0.0;	      __imag__ res = __copysignf (__ieee754_sqrtf (-__real__ x),					  __imag__ x);	    }	  else	    {	      __real__ res = fabsf (__ieee754_sqrtf (__real__ x));	      __imag__ res = __copysignf (0.0, __imag__ x);	    }	}      else if (rcls == FP_ZERO)	{	  float r = __ieee754_sqrtf (0.5 * fabsf (__imag__ x));	  __real__ res = __copysignf (r, __imag__ x);	  __imag__ res = r;	}      else	{#if 0 /* FIXME: this is broken. */	  __complex__ float q;	  float t, r;	  if (fabsf (__imag__ x) < 2.0e-4 * fabsf (__real__ x))	    t = 0.25 * __imag__ x * (__imag__ x / __real__ x);	  else	    t = 0.5 * (__ieee754_hypotf (__real__ x, __imag__ x) - __real__ x);	  r = __ieee754_sqrtf (t);	  __real__ q = __imag__ x / (2.0 * r);	  __imag__ q = r;	  /* Heron iteration in complex arithmetic.  */	  res = 0.5 * (q + q / x);#else	  float d, imag;	  d = __ieee754_hypotf (__real__ x, __imag__ x);	  imag = __ieee754_sqrtf (0.5 * (d - __real__ x));	  __real__ res = __ieee754_sqrtf (0.5 * (d + __real__ x));	  __imag__ res = __copysignf (imag, __imag__ x);#endif	}    }  return res;}