[flint] 02/24: Revert "correctly handle 0^0"

[felix salfelder]

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felix-guest pushed a commit to branch master
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commit 26eeae437aac07e5d95975d13d3559e3de55c54e
Author: William Hart <goodwillhart at googlemail.com>
Date:   Wed May 21 17:32:32 2014 +0100

    Revert "correctly handle 0^0"
    
    This reverts commit 6ea25083eb4152c23ac32259130527877dfe6d00.
---
 ulong_extras/powmod2_preinv.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ulong_extras/powmod2_preinv.c b/ulong_extras/powmod2_preinv.c
index 93ff950..f01ddba 100644
--- a/ulong_extras/powmod2_preinv.c
+++ b/ulong_extras/powmod2_preinv.c
@@ -31,8 +31,8 @@ mp_limb_t
 n_powmod2_ui_preinv(mp_limb_t a, mp_limb_t exp, mp_limb_t n, mp_limb_t ninv)
 {
     mp_limb_t x, y;
-   
-    if (n == UWORD(1) || (a == 0 && exp != 0)) return UWORD(0);
+
+    if (n == UWORD(1)) return UWORD(0);
 
     x = UWORD(1);
     y = a;

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