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1906 serge 1 
#define __FP_SIGNBIT  0x0200
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int __signbitl (long double x) {
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  unsigned short sw;
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  __asm__ ("fxam; fstsw %%ax;"
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	   : "=a" (sw)
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	   : "t" (x) );
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  return (sw & __FP_SIGNBIT) != 0;
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}
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int __attribute__ ((alias ("__signbitl"))) signbitl (long double);