libzahl

commit fa8d9c7e2be2b8953d1d3f2732c34741debd133a
parent 5e77b994435be4bef66ff596bf931e1fff97a77c
Author: Mattias Andrée <maandree@kth.se>
Date:   Sat, 12 Mar 2016 20:41:10 +0100

64 bits (severely) outshines 16 bits and 8 bits in performance: do some cleanup

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

Diffstat:
M
src/internals.h
 | 
1
-
M
src/zsets.c
 | 
19
-------------------

2 files changed, 0 insertions(+), 20 deletions(-)
diff --git a/src/internals.h b/src/internals.h
@@ -40,7 +40,6 @@
 
 #define LIST_CONSTS\
 	X(libzahl_const_1e19, zsetu, 10000000000000000000ULL) /* The largest power of 10 < 2⁶⁴. */\
-	X(libzahl_const_1e9,  zsetu, 1000000000ULL)           /* The largest power of 10 < 2³². */\
 	X(libzahl_const_1,    zsetu, 1)\
 	X(libzahl_const_2,    zsetu, 2)\
 	X(libzahl_const_4,    zsetu, 4)
diff --git a/src/zsets.c b/src/zsets.c
@@ -26,7 +26,6 @@ zsets(z_t a, const char *str)
 
 	SET_SIGNUM(a, 0);
 
-#if 1
 	zset(libzahl_tmp_str_num, libzahl_const_1e19);
 	switch ((str_end - str) % 19) {
 		while (*str) {
@@ -44,24 +43,6 @@ zsets(z_t a, const char *str)
 			zadd(a, a, libzahl_tmp_str_num);
 		}
 	}
-#else
-	zset(libzahl_tmp_str_num, libzahl_const_1);
-	switch ((str_end - str) % 9) {
-		while (*str) {
-			zmul(a, a, libzahl_const_1e9);
-			temp = 0;
-#define X(n)\
-		case n:\
-			temp *= 10, temp += *str++ & 15;
-			X(0) X(8) X(7) X(6) X(5) X(4) X(3) X(2) X(1)
-#undef X
-			if (!temp)
-				continue;
-			libzahl_tmp_str_num->chars[0] = temp;
-			zadd(a, a, libzahl_tmp_str_num);
-		}
-	}
-#endif
 
 	if (neg)
 		SET_SIGNUM(a, -zsignum(a));