From 153335625c429d2e4ab6a4d2d704d7eb91293290 Mon Sep 17 00:00:00 2001
From: Mans Rullgard <mans@mansr.com>
Date: Fri, 22 Jun 2012 15:37:46 +0100
Subject: libm: provide fallback definition for cbrtf() using powf()

This adds a fallback for cbrtf() using powf(x, 1/3).  Since
powf() with a non-integer exponent requires a non-negative
base, special handling of negative inputs is needed.

Signed-off-by: Mans Rullgard <mans@mansr.com>
---
 configure | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'configure')

diff --git a/configure b/configure
index 52c25b484c..473393a4e8 100755
--- a/configure
+++ b/configure
@@ -1059,6 +1059,7 @@ HAVE_LIST="
     asm_mod_y
     attribute_may_alias
     attribute_packed
+    cbrtf
     closesocket
     cmov
     dcbzl
@@ -2918,6 +2919,7 @@ done
 check_lib math.h sin -lm && LIBM="-lm"
 enabled vaapi && require vaapi va/va.h vaInitialize -lva
 
+check_mathfunc cbrtf
 check_mathfunc exp2
 check_mathfunc exp2f
 check_mathfunc llrint
-- 
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