diff --git a/configure b/configure
index 5de470c5835a9171f26b21da4d981c6a705ee6fd..ba7722186e80ca447d594879b3f210f8a634a88c 100755
--- a/configure
+++ b/configure
@@ -1815,6 +1815,8 @@ MATH_FUNCS="
     copysign
     cosf
     erf
+    exp10
+    exp10f
     exp2
     exp2f
     expf
diff --git a/libavutil/libm.h b/libavutil/libm.h
index 146768aac69c931de58a84aac69489e0de8aea92..6f9ac1b3492eaeb19e005e76ee1754c171d473e4 100644
--- a/libavutil/libm.h
+++ b/libavutil/libm.h
@@ -29,6 +29,7 @@
 #include "config.h"
 #include "attributes.h"
 #include "intfloat.h"
+#include "mathematics.h"
 
 #if HAVE_MIPSFPU && HAVE_INLINE_ASM
 #include "libavutil/mips/libm_mips.h"
@@ -292,6 +293,24 @@ static inline double erf(double z)
 #define exp2f(x) ((float)exp2(x))
 #endif /* HAVE_EXP2F */
 
+/* Somewhat inaccurate fallbacks, relative error ~ 1e-13 concentrated on very
+small and very large values. For perfection accuracy-wise, should use pow.
+Speed benefits (>2x average, with no super slow paths) deemed to be worth the
+accuracy tradeoff */
+#if !HAVE_EXP10
+static av_always_inline double exp10(double x)
+{
+    return exp2(M_LOG2_10 * x);
+}
+#endif /* HAVE_EXP10 */
+
+#if !HAVE_EXP10F
+static av_always_inline float exp10f(float x)
+{
+    return exp2f(M_LOG2_10 * x);
+}
+#endif /* HAVE_EXP10F */
+
 #if !HAVE_ISINF
 #undef isinf
 /* Note: these do not follow the BSD/Apple/GNU convention of returning -1 for