Changeset 7452:bd479d911573

Timestamp:

11/28/07 22:53:12 (5 years ago)

Author:

William Stein <wstein@…>

Branch:

default

Message:

Trac #1333 -- mpfr sqrt slowdown.

Location:

sage/rings

Files:

• mpfr.pxi (modified) (1 diff)
• real_mpfr.pyx (modified) (1 diff)

sage/rings/mpfr.pxi

@@ -123 +123 @@
     #define mpfr_abs(a,b,r) mpfr_set4(a,b,r,1)
     #define mpfr_sgn(x) mpfr_cmp_ui(x,0)
+    int mpfr_cmp_ui(mpfr_t, unsigned int n)
 
     int mpfr_round (mpfr_ptr rop, mpfr_srcptr op)

sage/rings/real_mpfr.pyx

@@ -2034 +2034 @@
         """
         cdef RealNumber x
-        if self >= 0:
+        if mpfr_cmp_ui(self.value, 0) >= 0:
             x = self._new()
             _sig_on