path: root/emulators/qemu/files/patch-libmath2

Index: qemu/bsd/Makefile
@@ -16,7 +16,8 @@
 	${MACHINE_ARCH}/s_rintl.c	\
 	${MACHINE_ARCH}/s_round.c	\
 	${MACHINE_ARCH}/s_sinl.S	\
-	${MACHINE_ARCH}/s_tanl.S
+	${MACHINE_ARCH}/s_tanl.S	\
+	${MACHINE_ARCH}/s_ldexpl.c
 
 OBJS=	${SRCS:R:S/$/.o/}
 
Index: qemu/bsd/i386/s_ldexpl.c
@@ -0,0 +1,21 @@
+#include <math.h>
+#include <errno.h>
+#include <sysdep.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;
+}
+
+weak_alias(__ldexpl,ldexpl)
Index: qemu/bsd/amd64/s_ldexpl.c
@@ -0,0 +1,21 @@
+#include <math.h>
+#include <errno.h>
+#include <sysdep.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;
+}
+
+weak_alias(__ldexpl,ldexpl)
Index: qemu/target-i386/helper.c
@@ -2886,6 +2886,8 @@
     ST0 = floatx_round_to_int(ST0, &env->fp_status);
 }
 
+long double	ldexpl(long double, int);
+
 void helper_fscale(void)
 {
     ST0 = ldexp (ST0, (int)(ST1));