Add libm to CI

Author: cuviper

.travis.yml

@@ -18,7 +18,7 @@ matrix:
       before_script:
         - rustup target add $TARGET
       script:
-        - cargo build --verbose --target $TARGET --no-default-features --features rand,serde
+        - cargo build --verbose --target $TARGET --no-default-features --features libm,rand,serde
     - name: "rustfmt"
       rust: 1.31.0
       before_script:

ci/test_full.sh

@@ -5,8 +5,8 @@ set -ex
 echo Testing num-complex on rustc ${TRAVIS_RUST_VERSION}
 
 case "$TRAVIS_RUST_VERSION" in
-  1.31.*) FEATURES="serde" ;;
-  *) FEATURES="serde rand" ;;
+  1.31.*) FEATURES="libm serde" ;;
+  *) FEATURES="libm serde rand" ;;
 esac
 
 # num-complex should build and test everywhere.