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-rw-r--r--src/compiler/glsl/float64.glsl6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/compiler/glsl/float64.glsl b/src/compiler/glsl/float64.glsl
index c54835fbf78..7d12da50ac0 100644
--- a/src/compiler/glsl/float64.glsl
+++ b/src/compiler/glsl/float64.glsl
@@ -1458,3 +1458,9 @@ __fmax64(uint64_t a, uint64_t b)
if (__flt64_nonnan(a, b)) return b;
return a;
}
+
+uint64_t
+__ffract64(uint64_t a)
+{
+ return __fadd64(a, __fneg64(__ffloor64(a)));
+}