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>
asm_mod_y
attribute_may_alias
attribute_packed
+ cbrtf
closesocket
cmov
dcbzl
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
#include "config.h"
#include "attributes.h"
+#if !HAVE_CBRTF
+static av_always_inline float cbrtf(float x)
+{
+ return x < 0 ? -powf(-x, 1.0 / 3.0) : powf(x, 1.0 / 3.0);
+}
+#endif
+
#if !HAVE_EXP2
#undef exp2
#define exp2(x) exp((x) * 0.693147180559945)