commit 41092754502d29303b19b2d8b799aa8266657fa6
author Danny Lin <danny@kdrag0n.dev> Mon Sep 20 15:50:01 2021 -0700
committer Danny Lin <danny@kdrag0n.dev> Mon Sep 20 15:50:01 2021 -0700
tree e2e5493c32a66e23d9b9e943e6d24172a55d869c
parent c1f631fecaa8a36e69237b1913602675aa26c07a

cam: Zcam: Simplify pow(0.5) to sqrt

src/commonMain/kotlin/dev/kdrag0n/colorkt/cam/Zcam.kt

diff --git a/src/commonMain/kotlin/dev/kdrag0n/colorkt/cam/Zcam.kt b/src/commonMain/kotlin/dev/kdrag0n/colorkt/cam/Zcam.kt
index a57357c..2877f87 100644
--- a/src/commonMain/kotlin/dev/kdrag0n/colorkt/cam/Zcam.kt
+++ b/src/commonMain/kotlin/dev/kdrag0n/colorkt/cam/Zcam.kt
@@ -229,7 +229,7 @@
             val F_b = sqrt(backgroundLuminance / referenceWhite.y)
             val F_l = 0.171 * cbrt(adaptingLuminance) * (1.0 - exp(-48.0 / 9.0 * adaptingLuminance))
 
-            Iz_coeff = 2700.0 * surroundFactor.pow(2.2) * F_b.pow(0.5) * F_l.pow(0.2)
+            Iz_coeff = 2700.0 * surroundFactor.pow(2.2) * sqrt(F_b) * F_l.pow(0.2)
             ez_coeff = F_l.pow(0.2)
             Qz_denom = F_b.pow(0.12)
             Sz_coeff = F_l.pow(0.6)