: "=t" (res) : "0" (x) : "ax", "dx");
: "=t" (res) : "0" (x), "m" (c0), "m" (c1) : "ax", "dx");
__ieee754_expl (long double x){  long double res;/* I added the following ugly construct because expl(+-Inf) resulted   in NaN.  The ugliness results from the bright minds at Intel.   For the i686 the code can be written better.   -- drepper@cygnus.com.  */  asm ("fxam\n\t"		/* Is NaN or +-Inf?  */       "fstsw	%%ax\n\t"       "movb	$0x45, %%dh\n\t"       "andb	%%ah, %%dh\n\t"       "cmpb	$0x05, %%dh\n\t"       "je	1f\n\t"		/* Is +-Inf, jump.    */       "fldl2e\n\t"             /* 1  log2(e)         */       "fmul %%st(1),%%st\n\t"  /* 1  x log2(e)       */       "frndint\n\t"            /* 1  i               */       "fld %%st(1)\n\t"        /* 2  x               */       "frndint\n\t"            /* 2  xi              */       "fld %%st(1)\n\t"        /* 3  i               */       "fldt c0\n\t"            /* 4  c0              */       "fld %%st(2)\n\t"        /* 5  xi              */       "fmul %%st(1),%%st\n\t"  /* 5  c0 xi           */       "fsubp %%st,%%st(2)\n\t" /* 4  f = c0 xi  - i  */       "fld %%st(4)\n\t"        /* 5  x               */       "fsub %%st(3),%%st\n\t"  /* 5  xf = x - xi     */       "fmulp %%st,%%st(1)\n\t" /* 4  c0 xf           */       "faddp %%st,%%st(1)\n\t" /* 3  f = f + c0 xf   */       "fldt c1\n\t"            /* 4                  */       "fmul %%st(4),%%st\n\t"  /* 4  c1 * x          */       "faddp %%st,%%st(1)\n\t" /* 3  f = f + c1 * x  */       "f2xm1\n\t"		/* 3 2^(fract(x * log2(e))) - 1 */       "fld1\n\t"               /* 4 1.0              */       "faddp\n\t"		/* 3 2^(fract(x * log2(e))) */       "fstp	%%st(1)\n\t"    /* 2  */       "fscale\n\t"	        /* 2 scale factor is st(1); e^x */       "fstp	%%st(1)\n\t"    /* 1  */       "fstp	%%st(1)\n\t"    /* 0  */       "jmp 2f\n\t"       "1:\ttestl	$0x200, %%eax\n\t"	/* Test sign.  */       "jz	2f\n\t"		/* If positive, jump.  */       "fstp	%%st\n\t"       "fldz\n\t"		/* Set result to 0.  */       "2:\t\n"       : "=t" (res) : "0" (x) : "ax", "dx");  return res;}