| c02afc | Zeros of a polynomial with complex coefficients |
| c02agc | Zeros of a polynomial with real coefficients |
| c02akc | Zeros of a cubic polynomial with real coefficients |
| c02alc | Zeros of a real quartic polynomial with real coefficients |
| c05auc | Zero of continuous function, Brent algorithm, from a given starting value, binary search for interval |
| c05avc | Binary search for interval containing zero of continuous function (reverse communication) |
| c05awc | Zero of continuous function, continuation method, from a given starting value |
| c05axc | Zero of continuous function, continuation method, from a given starting value (reverse communication) |
| c05ayc | Zero of continuous function in a given interval, Brent algorithm |
| c05azc | Zero of continuous function in a given interval, Brent algorithm (reverse communication) |
| g13dxc | Calculates the zeros of a vector autoregressive (or moving average) operator |
| s17alc | Zeros of Bessel functions Jα(x), Jα ′ (x), Yα(x) or Yα ′ (x) |