14 lines
249 B
C
14 lines
249 B
C
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#define __FP_SIGNBIT 0x0200
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int __signbit (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;
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}
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#undef signbit
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int __attribute__ ((alias ("__signbit"))) signbit (double);
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