[babl] babl: adjust default BABL_TOLERANCE

[Øyvind "pippin" Kolås <ok src gnome org>]

commit e41da81b67128a8d29d8fd106e5b1ac53da16ecb
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri Nov 8 13:54:15 2019 +0100

    babl: adjust default BABL_TOLERANCE
    
    This as a start of fixing issue #49, lower precision code gets generated
    on AMD EPYC, due to use of rcpps to get a reciprocal - which has lower
    precision on AMD EPYC. The conversions with AMD EPYC gets included with
    a small margin - so we should not be shedding many other fast conversions
    due to this.

 babl/babl-fish-path.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/babl/babl-fish-path.c b/babl/babl-fish-path.c
index c8911d192..8d86e627e 100644
--- a/babl/babl-fish-path.c
+++ b/babl/babl-fish-path.c
@@ -21,7 +21,7 @@
 #include "babl-internal.h"
 #include "babl-ref-pixels.h"
 
-#define BABL_TOLERANCE             0.0000047
+#define BABL_TOLERANCE             0.0000041
 #define BABL_MAX_COST_VALUE        2000000
 #define BABL_HARD_MAX_PATH_LENGTH  8
 #define BABL_MAX_NAME_LEN          1024