version: 2.1

jobs:
  linmath-test:
    machine:
      image: ubuntu-1604:201903-01
    steps:
     - run: gcc --version
     - checkout
     - run:
         command: |
           gcc -O0 -o linmath_test.o linmath_test.c -lm
           ./linmath_test.o
         name: linmath tests gcc -O0
     - run:
         command: |
           gcc -O1 -o linmath_test.o linmath_test.c -lm
           ./linmath_test.o
         name: linmath tests gcc -O1
     - run:
         command: |
           gcc -O2 -o linmath_test.o linmath_test.c -lm
           ./linmath_test.o
         name: linmath tests gcc -O2
     - run:
         command: |
           gcc -O3 -o linmath_test.o linmath_test.c -lm
           ./linmath_test.o
         name: linmath tests gcc -O3


workflows:
  main:
    jobs:
      - linmath-test