EISPACK
Algol versions of the algorithms written in Fortran
- Restructured to avoid underflow
- Check user’s claims such as if matrix positive definite
- Format programs in a unified fashion
- Field test sites
1971 U of Michigan Summer Conference
- JHW algorithms & CBM software
1972 Software released via Argonne Code Center
Software certified in the sense that reports of poor or incorrect performance “would gain the immediate attention from the developers”