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-rw-r--r--lib/builtins/fixdfti.c33
1 files changed, 7 insertions, 26 deletions
diff --git a/lib/builtins/fixdfti.c b/lib/builtins/fixdfti.c
index 2c27f4bae3b9..aaf225e74f86 100644
--- a/lib/builtins/fixdfti.c
+++ b/lib/builtins/fixdfti.c
@@ -6,40 +6,21 @@
* Source Licenses. See LICENSE.TXT for details.
*
* ===----------------------------------------------------------------------===
- *
- * This file implements __fixdfti for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
*/
#include "int_lib.h"
#ifdef CRT_HAS_128BIT
+#define DOUBLE_PRECISION
+#include "fp_lib.h"
-/* Returns: convert a to a signed long long, rounding toward zero. */
-
-/* Assumption: double is a IEEE 64 bit floating point type
- * su_int is a 32 bit integral type
- * value in double is representable in ti_int (no range checking performed)
- */
-
-/* seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm */
+typedef ti_int fixint_t;
+typedef tu_int fixuint_t;
+#include "fp_fixint_impl.inc"
COMPILER_RT_ABI ti_int
-__fixdfti(double a)
-{
- double_bits fb;
- fb.f = a;
- int e = ((fb.u.s.high & 0x7FF00000) >> 20) - 1023;
- if (e < 0)
- return 0;
- ti_int s = (si_int)(fb.u.s.high & 0x80000000) >> 31;
- ti_int r = 0x0010000000000000uLL | (0x000FFFFFFFFFFFFFuLL & fb.u.all);
- if (e > 52)
- r <<= (e - 52);
- else
- r >>= (52 - e);
- return (r ^ s) - s;
+__fixdfti(fp_t a) {
+ return __fixint(a);
}
#endif /* CRT_HAS_128BIT */