diff --git a/benchtests/Makefile b/benchtests/Makefile
index 7f5fda5..f49e9a0 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -23,7 +23,7 @@ subdir := benchtests
 include ../Makeconfig
 bench-math := acos acosh asin asinh atan atanh cos cosh exp exp2 log log2 \
 	      modf pow rint sin sincos sinh sqrt tan tanh fmin fmax fminf \
-	      fmaxf
+	      fmaxf powf
 
 bench-pthread := pthread_once
 
diff --git a/benchtests/powf-inputs b/benchtests/powf-inputs
new file mode 100644
index 0000000..6cdb05b
--- /dev/null
+++ b/benchtests/powf-inputs
@@ -0,0 +1,410 @@
+## args: float:float
+## ret: float
+## includes: math.h
+## name: positive base to positive exponent
+0x0p+0, 0x0p+0
+0x0p+0, 0x1.22e8bap+2
+0x0p+0, 0x1.22e8bap+3
+0x0p+0, 0x1.b45d18p+3
+0x0p+0, 0x1.22e8bap+4
+0x0p+0, 0x1.6ba2eap+4
+0x0p+0, 0x1.b45d18p+4
+0x0p+0, 0x1.fd1746p+4
+0x0p+0, 0x1.22e8bap+5
+0x0p+0, 0x1.4745d2p+5
+0x0p+0, 0x1.6ba2eap+5
+0x0p+0, 0x1.9p+5
+0x1.22e8bap+2, 0x0p+0
+0x1.22e8bap+2, 0x1.22e8bap+2
+0x1.22e8bap+2, 0x1.22e8bap+3
+0x1.22e8bap+2, 0x1.b45d18p+3
+0x1.22e8bap+2, 0x1.22e8bap+4
+0x1.22e8bap+2, 0x1.6ba2eap+4
+0x1.22e8bap+2, 0x1.b45d18p+4
+0x1.22e8bap+2, 0x1.fd1746p+4
+0x1.22e8bap+2, 0x1.22e8bap+5
+0x1.22e8bap+2, 0x1.4745d2p+5
+0x1.22e8bap+2, 0x1.6ba2eap+5
+0x1.22e8bap+2, 0x1.9p+5
+0x1.22e8bap+3, 0x0p+0
+0x1.22e8bap+3, 0x1.22e8bap+2
+0x1.22e8bap+3, 0x1.22e8bap+3
+0x1.22e8bap+3, 0x1.b45d18p+3
+0x1.22e8bap+3, 0x1.22e8bap+4
+0x1.22e8bap+3, 0x1.6ba2eap+4
+0x1.22e8bap+3, 0x1.b45d18p+4
+0x1.22e8bap+3, 0x1.fd1746p+4
+0x1.22e8bap+3, 0x1.22e8bap+5
+0x1.22e8bap+3, 0x1.4745d2p+5
+0x1.22e8bap+3, 0x1.6ba2eap+5
+0x1.22e8bap+3, 0x1.9p+5
+0x1.b45d18p+3, 0x0p+0
+0x1.b45d18p+3, 0x1.22e8bap+2
+0x1.b45d18p+3, 0x1.22e8bap+3
+0x1.b45d18p+3, 0x1.b45d18p+3
+0x1.b45d18p+3, 0x1.22e8bap+4
+0x1.b45d18p+3, 0x1.6ba2eap+4
+0x1.b45d18p+3, 0x1.b45d18p+4
+0x1.b45d18p+3, 0x1.fd1746p+4
+0x1.b45d18p+3, 0x1.22e8bap+5
+0x1.b45d18p+3, 0x1.4745d2p+5
+0x1.b45d18p+3, 0x1.6ba2eap+5
+0x1.b45d18p+3, 0x1.9p+5
+0x1.22e8bap+4, 0x0p+0
+0x1.22e8bap+4, 0x1.22e8bap+2
+0x1.22e8bap+4, 0x1.22e8bap+3
+0x1.22e8bap+4, 0x1.b45d18p+3
+0x1.22e8bap+4, 0x1.22e8bap+4
+0x1.22e8bap+4, 0x1.6ba2eap+4
+0x1.22e8bap+4, 0x1.b45d18p+4
+0x1.22e8bap+4, 0x1.fd1746p+4
+0x1.22e8bap+4, 0x1.22e8bap+5
+0x1.22e8bap+4, 0x1.4745d2p+5
+0x1.22e8bap+4, 0x1.6ba2eap+5
+0x1.22e8bap+4, 0x1.9p+5
+0x1.6ba2eap+4, 0x0p+0
+0x1.6ba2eap+4, 0x1.22e8bap+2
+0x1.6ba2eap+4, 0x1.22e8bap+3
+0x1.6ba2eap+4, 0x1.b45d18p+3
+0x1.6ba2eap+4, 0x1.22e8bap+4
+0x1.6ba2eap+4, 0x1.6ba2eap+4
+0x1.6ba2eap+4, 0x1.b45d18p+4
+0x1.6ba2eap+4, 0x1.fd1746p+4
+0x1.6ba2eap+4, 0x1.22e8bap+5
+0x1.6ba2eap+4, 0x1.4745d2p+5
+0x1.6ba2eap+4, 0x1.6ba2eap+5
+0x1.6ba2eap+4, 0x1.9p+5
+0x1.b45d18p+4, 0x0p+0
+0x1.b45d18p+4, 0x1.22e8bap+2
+0x1.b45d18p+4, 0x1.22e8bap+3
+0x1.b45d18p+4, 0x1.b45d18p+3
+0x1.b45d18p+4, 0x1.22e8bap+4
+0x1.b45d18p+4, 0x1.6ba2eap+4
+0x1.b45d18p+4, 0x1.b45d18p+4
+0x1.b45d18p+4, 0x1.fd1746p+4
+0x1.b45d18p+4, 0x1.22e8bap+5
+0x1.b45d18p+4, 0x1.4745d2p+5
+0x1.b45d18p+4, 0x1.6ba2eap+5
+0x1.b45d18p+4, 0x1.9p+5
+0x1.fd1746p+4, 0x0p+0
+0x1.fd1746p+4, 0x1.22e8bap+2
+0x1.fd1746p+4, 0x1.22e8bap+3
+0x1.fd1746p+4, 0x1.b45d18p+3
+0x1.fd1746p+4, 0x1.22e8bap+4
+0x1.fd1746p+4, 0x1.6ba2eap+4
+0x1.fd1746p+4, 0x1.b45d18p+4
+0x1.fd1746p+4, 0x1.fd1746p+4
+0x1.fd1746p+4, 0x1.22e8bap+5
+0x1.fd1746p+4, 0x1.4745d2p+5
+0x1.fd1746p+4, 0x1.6ba2eap+5
+0x1.fd1746p+4, 0x1.9p+5
+0x1.22e8bap+5, 0x0p+0
+0x1.22e8bap+5, 0x1.22e8bap+2
+0x1.22e8bap+5, 0x1.22e8bap+3
+0x1.22e8bap+5, 0x1.b45d18p+3
+0x1.22e8bap+5, 0x1.22e8bap+4
+0x1.22e8bap+5, 0x1.6ba2eap+4
+0x1.22e8bap+5, 0x1.b45d18p+4
+0x1.22e8bap+5, 0x1.fd1746p+4
+0x1.22e8bap+5, 0x1.22e8bap+5
+0x1.22e8bap+5, 0x1.4745d2p+5
+0x1.22e8bap+5, 0x1.6ba2eap+5
+0x1.22e8bap+5, 0x1.9p+5
+0x1.4745d2p+5, 0x0p+0
+0x1.4745d2p+5, 0x1.22e8bap+2
+0x1.4745d2p+5, 0x1.22e8bap+3
+0x1.4745d2p+5, 0x1.b45d18p+3
+0x1.4745d2p+5, 0x1.22e8bap+4
+0x1.4745d2p+5, 0x1.6ba2eap+4
+0x1.4745d2p+5, 0x1.b45d18p+4
+0x1.4745d2p+5, 0x1.fd1746p+4
+0x1.4745d2p+5, 0x1.22e8bap+5
+0x1.4745d2p+5, 0x1.4745d2p+5
+0x1.4745d2p+5, 0x1.6ba2eap+5
+0x1.4745d2p+5, 0x1.9p+5
+0x1.6ba2eap+5, 0x0p+0
+0x1.6ba2eap+5, 0x1.22e8bap+2
+0x1.6ba2eap+5, 0x1.22e8bap+3
+0x1.6ba2eap+5, 0x1.b45d18p+3
+0x1.6ba2eap+5, 0x1.22e8bap+4
+0x1.6ba2eap+5, 0x1.6ba2eap+4
+0x1.6ba2eap+5, 0x1.b45d18p+4
+0x1.6ba2eap+5, 0x1.fd1746p+4
+0x1.6ba2eap+5, 0x1.22e8bap+5
+0x1.6ba2eap+5, 0x1.4745d2p+5
+0x1.6ba2eap+5, 0x1.6ba2eap+5
+0x1.6ba2eap+5, 0x1.9p+5
+0x1.9p+5, 0x0p+0
+0x1.9p+5, 0x1.22e8bap+2
+0x1.9p+5, 0x1.22e8bap+3
+0x1.9p+5, 0x1.b45d18p+3
+0x1.9p+5, 0x1.22e8bap+4
+0x1.9p+5, 0x1.6ba2eap+4
+0x1.9p+5, 0x1.b45d18p+4
+0x1.9p+5, 0x1.fd1746p+4
+0x1.9p+5, 0x1.22e8bap+5
+0x1.9p+5, 0x1.4745d2p+5
+0x1.9p+5, 0x1.6ba2eap+5
+0x1.9p+5, 0x1.9p+5
+## name: exponent 0
+-0x1.fffffep+127, 0x0p+0
+-0x1.333332p+127, 0x0p+0
+-0x1.999998p+125, 0x0p+0
+0x1.999998p+125, 0x0p+0
+0x1.333332p+127, 0x0p+0
+0x1.fffffep+127, 0x0p+0
+## name: negative base to even exponent
+-0x1.fffffep+127, -0x1.8p+3
+-0x1.fffffep+127, -0x1.cccccep+2
+-0x1.fffffep+127, -0x1.33333p+1
+-0x1.fffffep+127, 0x1.333338p+1
+-0x1.fffffep+127, 0x1.ccccdp+2
+-0x1.fffffep+127, 0x1.8p+3
+-0x1.999998p+127, -0x1.8p+3
+-0x1.999998p+127, -0x1.cccccep+2
+-0x1.999998p+127, -0x1.33333p+1
+-0x1.999998p+127, 0x1.333338p+1
+-0x1.999998p+127, 0x1.ccccdp+2
+-0x1.999998p+127, 0x1.8p+3
+-0x1.333332p+127, -0x1.8p+3
+-0x1.333332p+127, -0x1.cccccep+2
+-0x1.333332p+127, -0x1.33333p+1
+-0x1.333332p+127, 0x1.333338p+1
+-0x1.333332p+127, 0x1.ccccdp+2
+-0x1.333332p+127, 0x1.8p+3
+-0x1.999998p+126, -0x1.8p+3
+-0x1.999998p+126, -0x1.cccccep+2
+-0x1.999998p+126, -0x1.33333p+1
+-0x1.999998p+126, 0x1.333338p+1
+-0x1.999998p+126, 0x1.ccccdp+2
+-0x1.999998p+126, 0x1.8p+3
+-0x1.999998p+125, -0x1.8p+3
+-0x1.999998p+125, -0x1.cccccep+2
+-0x1.999998p+125, -0x1.33333p+1
+-0x1.999998p+125, 0x1.333338p+1
+-0x1.999998p+125, 0x1.ccccdp+2
+-0x1.999998p+125, 0x1.8p+3
+0x0p+0, -0x1.8p+3
+0x0p+0, -0x1.cccccep+2
+0x0p+0, -0x1.33333p+1
+0x0p+0, 0x1.333338p+1
+0x0p+0, 0x1.ccccdp+2
+0x0p+0, 0x1.8p+3
+## name: negative base to odd exponent
+-0x1.fffffep+127, -0x1.6p+3
+-0x1.fffffep+127, -0x1.8cccccp+2
+-0x1.fffffep+127, -0x1.66666p+0
+-0x1.fffffep+127, 0x1.b33338p+1
+-0x1.fffffep+127, 0x1.066668p+3
+-0x1.fffffep+127, 0x1.ap+3
+-0x1.999998p+127, -0x1.6p+3
+-0x1.999998p+127, -0x1.8cccccp+2
+-0x1.999998p+127, -0x1.66666p+0
+-0x1.999998p+127, 0x1.b33338p+1
+-0x1.999998p+127, 0x1.066668p+3
+-0x1.999998p+127, 0x1.ap+3
+-0x1.333332p+127, -0x1.6p+3
+-0x1.333332p+127, -0x1.8cccccp+2
+-0x1.333332p+127, -0x1.66666p+0
+-0x1.333332p+127, 0x1.b33338p+1
+-0x1.333332p+127, 0x1.066668p+3
+-0x1.333332p+127, 0x1.ap+3
+-0x1.999998p+126, -0x1.6p+3
+-0x1.999998p+126, -0x1.8cccccp+2
+-0x1.999998p+126, -0x1.66666p+0
+-0x1.999998p+126, 0x1.b33338p+1
+-0x1.999998p+126, 0x1.066668p+3
+-0x1.999998p+126, 0x1.ap+3
+-0x1.999998p+125, -0x1.6p+3
+-0x1.999998p+125, -0x1.8cccccp+2
+-0x1.999998p+125, -0x1.66666p+0
+-0x1.999998p+125, 0x1.b33338p+1
+-0x1.999998p+125, 0x1.066668p+3
+-0x1.999998p+125, 0x1.ap+3
+0x0p+0, -0x1.6p+3
+0x0p+0, -0x1.8cccccp+2
+0x0p+0, -0x1.66666p+0
+0x0p+0, 0x1.b33338p+1
+0x0p+0, 0x1.066668p+3
+0x0p+0, 0x1.ap+3
+## name: negative base to non-integer exponent
+-0x1.fffffep+127, -0x1.7p+3
+-0x1.fffffep+127, -0x1.acccccp+2
+-0x1.fffffep+127, -0x1.e66668p+0
+-0x1.fffffep+127, 0x1.733338p+1
+-0x1.fffffep+127, 0x1.ecccccp+2
+-0x1.fffffep+127, 0x1.9p+3
+-0x1.999998p+127, -0x1.7p+3
+-0x1.999998p+127, -0x1.acccccp+2
+-0x1.999998p+127, -0x1.e66668p+0
+-0x1.999998p+127, 0x1.733338p+1
+-0x1.999998p+127, 0x1.ecccccp+2
+-0x1.999998p+127, 0x1.9p+3
+-0x1.333332p+127, -0x1.7p+3
+-0x1.333332p+127, -0x1.acccccp+2
+-0x1.333332p+127, -0x1.e66668p+0
+-0x1.333332p+127, 0x1.733338p+1
+-0x1.333332p+127, 0x1.ecccccp+2
+-0x1.333332p+127, 0x1.9p+3
+-0x1.999998p+126, -0x1.7p+3
+-0x1.999998p+126, -0x1.acccccp+2
+-0x1.999998p+126, -0x1.e66668p+0
+-0x1.999998p+126, 0x1.733338p+1
+-0x1.999998p+126, 0x1.ecccccp+2
+-0x1.999998p+126, 0x1.9p+3
+-0x1.999998p+125, -0x1.7p+3
+-0x1.999998p+125, -0x1.acccccp+2
+-0x1.999998p+125, -0x1.e66668p+0
+-0x1.999998p+125, 0x1.733338p+1
+-0x1.999998p+125, 0x1.ecccccp+2
+-0x1.999998p+125, 0x1.9p+3
+0x0p+0, -0x1.7p+3
+0x0p+0, -0x1.acccccp+2
+0x0p+0, -0x1.e66668p+0
+0x0p+0, 0x1.733338p+1
+0x0p+0, 0x1.ecccccp+2
+0x0p+0, 0x1.9p+3
+## name: exponent 1
+-0x1.fffffep+127, 0x1p+0
+-0x1.333332p+127, 0x1p+0
+-0x1.999998p+125, 0x1p+0
+0x1.999998p+125, 0x1p+0
+0x1.333332p+127, 0x1p+0
+0x1.fffffep+127, 0x1p+0
+## name: exponent -1
+-0x1.fffffep+127, -0x1p+0
+-0x1.333332p+127, -0x1p+0
+-0x1.999998p+125, -0x1p+0
+0x1.999998p+125, -0x1p+0
+0x1.333332p+127, -0x1p+0
+0x1.fffffep+127, -0x1p+0
+## name: squared
+-0x1.fffffep+127, 0x1p+1
+-0x1.333332p+127, 0x1p+1
+-0x1.999998p+125, 0x1p+1
+0x1.999998p+125, 0x1p+1
+0x1.333332p+127, 0x1p+1
+0x1.fffffep+127, 0x1p+1
+## name: squareroot
+-0x1.fffffep+127, 0x1p-1
+-0x1.333332p+127, 0x1p-1
+-0x1.999998p+125, 0x1p-1
+0x1.999998p+125, 0x1p-1
+0x1.333332p+127, 0x1p-1
+0x1.fffffep+127, 0x1p-1
+## name: 1 to negative exponent
+0x1p+0, -0x1.fffffep+127
+0x1p+0, -0x1.999998p+127
+0x1p+0, -0x1.333332p+127
+0x1p+0, -0x1.999998p+126
+0x1p+0, -0x1.999998p+125
+0x1p+0, 0x0p+0
+## name: -1 to negative exponent
+-0x1p+0, -0x1.fffffep+127
+-0x1p+0, -0x1.999998p+127
+-0x1p+0, -0x1.333332p+127
+-0x1p+0, -0x1.999998p+126
+-0x1p+0, -0x1.999998p+125
+-0x1p+0, 0x0p+0
+## name: -1 to non-integer exponent
+-0x1p+0, -0x1.7p+3
+-0x1p+0, -0x1.acccccp+2
+-0x1p+0, -0x1.e66668p+0
+-0x1p+0, 0x1.733338p+1
+-0x1p+0, 0x1.ecccccp+2
+-0x1p+0, 0x1.9p+3
+## name: -1 to odd exponent
+-0x1p+0, -0x1.6p+3
+-0x1p+0, -0x1.8cccccp+2
+-0x1p+0, -0x1.66666p+0
+-0x1p+0, 0x1.b33338p+1
+-0x1p+0, 0x1.066668p+3
+-0x1p+0, 0x1.ap+3
+## name: base 0
+0x0p+0, -0x1.fffffep+127
+0x0p+0, -0x1.333332p+127
+0x0p+0, -0x1.999998p+125
+0x0p+0, 0x1.999998p+125
+0x0p+0, 0x1.333332p+127
+0x0p+0, 0x1.fffffep+127
+## name: -1 to even exponent
+-0x1p+0, -0x1.8p+3
+-0x1p+0, -0x1.cccccep+2
+-0x1p+0, -0x1.33333p+1
+-0x1p+0, 0x1.333338p+1
+-0x1p+0, 0x1.ccccdp+2
+-0x1p+0, 0x1.8p+3
+## name: small base
+0x1.fffffp-1, -0x1.fffffep+127
+0x1.fffffp-1, -0x1.333332p+127
+0x1.fffffp-1, -0x1.999998p+125
+0x1.fffffp-1, 0x1.999998p+125
+0x1.fffffp-1, 0x1.333332p+127
+0x1.fffffp-1, 0x1.fffffep+127
+0x1.fffff8p-1, -0x1.fffffep+127
+0x1.fffff8p-1, -0x1.333332p+127
+0x1.fffff8p-1, -0x1.999998p+125
+0x1.fffff8p-1, 0x1.999998p+125
+0x1.fffff8p-1, 0x1.333332p+127
+0x1.fffff8p-1, 0x1.fffffep+127
+0x1p+0, -0x1.fffffep+127
+0x1p+0, -0x1.333332p+127
+0x1p+0, -0x1.999998p+125
+0x1p+0, 0x1.999998p+125
+0x1p+0, 0x1.333332p+127
+0x1p+0, 0x1.fffffep+127
+0x1.000004p+0, -0x1.fffffep+127
+0x1.000004p+0, -0x1.333332p+127
+0x1.000004p+0, -0x1.999998p+125
+0x1.000004p+0, 0x1.999998p+125
+0x1.000004p+0, 0x1.333332p+127
+0x1.000004p+0, 0x1.fffffep+127
+0x1.000008p+0, -0x1.fffffep+127
+0x1.000008p+0, -0x1.333332p+127
+0x1.000008p+0, -0x1.999998p+125
+0x1.000008p+0, 0x1.999998p+125
+0x1.000008p+0, 0x1.333332p+127
+0x1.000008p+0, 0x1.fffffep+127
+0x1.00001p+0, -0x1.fffffep+127
+0x1.00001p+0, -0x1.333332p+127
+0x1.00001p+0, -0x1.999998p+125
+0x1.00001p+0, 0x1.999998p+125
+0x1.00001p+0, 0x1.333332p+127
+0x1.00001p+0, 0x1.fffffep+127
+## name: small exponent
+-0x1.fffffep+127, -0x1p-32
+-0x1.fffffep+127, -0x1.333334p-33
+-0x1.fffffep+127, -0x1.99999cp-35
+-0x1.fffffep+127, 0x1.9999ap-35
+-0x1.fffffep+127, 0x1.333334p-33
+-0x1.fffffep+127, 0x1p-32
+-0x1.333332p+127, -0x1p-32
+-0x1.333332p+127, -0x1.333334p-33
+-0x1.333332p+127, -0x1.99999cp-35
+-0x1.333332p+127, 0x1.9999ap-35
+-0x1.333332p+127, 0x1.333334p-33
+-0x1.333332p+127, 0x1p-32
+-0x1.999998p+125, -0x1p-32
+-0x1.999998p+125, -0x1.333334p-33
+-0x1.999998p+125, -0x1.99999cp-35
+-0x1.999998p+125, 0x1.9999ap-35
+-0x1.999998p+125, 0x1.333334p-33
+-0x1.999998p+125, 0x1p-32
+0x1.999998p+125, -0x1p-32
+0x1.999998p+125, -0x1.333334p-33
+0x1.999998p+125, -0x1.99999cp-35
+0x1.999998p+125, 0x1.9999ap-35
+0x1.999998p+125, 0x1.333334p-33
+0x1.999998p+125, 0x1p-32
+0x1.333332p+127, -0x1p-32
+0x1.333332p+127, -0x1.333334p-33
+0x1.333332p+127, -0x1.99999cp-35
+0x1.333332p+127, 0x1.9999ap-35
+0x1.333332p+127, 0x1.333334p-33
+0x1.333332p+127, 0x1p-32
+0x1.fffffep+127, -0x1p-32
+0x1.fffffep+127, -0x1.333334p-33
+0x1.fffffep+127, -0x1.99999cp-35
+0x1.fffffep+127, 0x1.9999ap-35
+0x1.fffffep+127, 0x1.333334p-33
+0x1.fffffep+127, 0x1p-32
