20 lines
333 B
C
20 lines
333 B
C
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#include <math.h>
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#include <errno.h>
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long double ldexpl(long double x, int expn)
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{
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long double res;
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if (!isfinite (x) || x == 0.0L)
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return x;
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__asm__ ("fscale"
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: "=t" (res)
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: "0" (x), "u" ((long double) expn));
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if (!isfinite (res) || res == 0.0L)
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errno = ERANGE;
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return res;
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}
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