text: #include "libm.h"
  
  #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
  int __fpclassifyl(TASELDOUBLE x)
  {
  	return __fpclassify(x);
  }
  #elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
  int __fpclassifyl(TASELDOUBLE x)
  {
  	union ldshape u = {x};
  	int e = u.i.se & 0x7fff;
  	int msb = u.i.m>>63;
  	if (!e && !msb)
  		return u.i.m ? FP_SUBNORMAL : FP_ZERO;
  	if (e == 0x7fff) {
  		/* The x86 variant of 80-bit extended precision only admits
  		 * one representation of each infinity, with the mantissa msb
  		 * necessarily set. The version with it clear is invalid/nan.
  		 * The m68k variant, however, allows either, and tooling uses
  		 * the version with it clear. */
  		if (__BYTE_ORDER == __LITTLE_ENDIAN && !msb)
  			return FP_NAN;
  		return u.i.m << 1 ? FP_NAN : FP_INFINITE;
  	}
  	if (!msb)
  		return FP_NAN;
  	return FP_NORMAL;
  }
  #elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
  int __fpclassifyl(TASELDOUBLE x)
  {
  	union ldshape u = {x};
  	int e = u.i.se & 0x7fff;
  	u.i.se = 0;
  	if (!e)
  		return u.i2.lo | u.i2.hi ? FP_SUBNORMAL : FP_ZERO;
  	if (e == 0x7fff)
  		return u.i2.lo | u.i2.hi ? FP_NAN : FP_INFINITE;
  	return FP_NORMAL;
  }
  #endif
  