Multiple changes:

1)  Compile test with -O0, it takes too long otherwise.

2)  Add error codes: ZERROR_0_POW_0, ZERROR_0_DIV_0, ZERROR_DIV_0, ZERROR_NEGATIVE.

3)  Add workaround for a bug in clang (src/allocator.c).

4)  Cleanups.

5)  Minor optimisations.

6)  Add inclusion guard for zahl.h.

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 2 insertions, 4 deletions

diff --git a/src/znot.c b/src/znot.c
index e1b114c..bebc55b 100644
--- a/src/znot.c
+++ b/src/znot.c
@@ -7,7 +7,7 @@ znot(z_t a, z_t b)
 {
 	size_t bits, i;
 
-	if (EXPECT(zzero(b), 0)) {
+	if (unlikely(zzero(b))) {
 		SET_SIGNUM(a, 0);
 		return;
 	}
@@ -22,7 +22,5 @@ znot(z_t a, z_t b)
 	if (bits)
 		a->chars[a->used - 1] &= ((zahl_char_t)1 << bits) - 1;
 
-	TRIM(a);
-	if (!a->used)
-		SET_SIGNUM(a, 0);
+	TRIM_AND_ZERO(a);
 }