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-rw-r--r--winsup/mingw/mingwex/math/ldexpl.c21
1 files changed, 13 insertions, 8 deletions
diff --git a/winsup/mingw/mingwex/math/ldexpl.c b/winsup/mingw/mingwex/math/ldexpl.c
index e4477bf6c..19a3d56e3 100644
--- a/winsup/mingw/mingwex/math/ldexpl.c
+++ b/winsup/mingw/mingwex/math/ldexpl.c
@@ -1,14 +1,19 @@
#include <math.h>
#include <errno.h>
-
-
+
long double ldexpl(long double x, int expn)
{
- if (isfinite (x) && x != 0.0L)
- {
- x = scalbnl (x , expn);
- if (!isfinite (x) || x == 0.0) errno = ERANGE;
- }
- return x;
+ 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;
}