newlib-cygwin/winsup/mingw/mingwex/math/ldexpl.c

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