From cf26d430b9b880bee30ed2387050079df06a7d05 Mon Sep 17 00:00:00 2001 From: =?utf8?q?=C3=98yvind=20Kol=C3=A5s?= Date: Thu, 12 Jan 2017 21:39:11 +0100 Subject: [PATCH] extensions/CIE: make some constants single precision float Speeds up the 32bit float versions of conversions by a bit more than 5% without changing the precision of 32bit floating point since the constants are of similar magnitude to single precision IEEE float. --- extensions/CIE.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/extensions/CIE.c b/extensions/CIE.c index 2e0aca2..23af1c9 100644 --- a/extensions/CIE.c +++ b/extensions/CIE.c @@ -28,8 +28,8 @@ #define DEGREES_PER_RADIAN (180 / 3.14159265358979323846) #define RADIANS_PER_DEGREE (1 / DEGREES_PER_RADIAN) -#define LAB_EPSILON (216.0 / 24389.0) -#define LAB_KAPPA (24389.0 / 27.0) +#define LAB_EPSILON (216.0f / 24389.0f) +#define LAB_KAPPA (24389.0f / 27.0f) /* The constants below hard-code the D50-adapted sRGB ICC profile * reference white, aka the ICC profile D50 illuminant. @@ -46,9 +46,9 @@ * hard-coded D50 ICC profile illuminant values: */ -#define D50_WHITE_REF_X 0.964202880 -#define D50_WHITE_REF_Y 1.000000000 -#define D50_WHITE_REF_Z 0.824905400 +#define D50_WHITE_REF_X 0.964202880f +#define D50_WHITE_REF_Y 1.000000000f +#define D50_WHITE_REF_Z 0.824905400f int init (void); @@ -1044,7 +1044,6 @@ types_u16 (void) babl_type_new ( "CIE u16 ab", - "id", "CIE u8 ab", "integer", "unsigned", "bits", 16, -- 2.30.2