## functions in fermi.i - i

ifd12
```
ifd12(y)

return x = inverse of Fermi-Dirac integral of order 1/2,
y = integral[0 to inf]{ dt * t^0.5 / (exp(t-x)+1) }
accurate to about 1e-8
Interpreted function, defined at i/fermi.i   line 208

```
SEE ALSO: ifdm12,   ifd32,   ifd52,   fdm12,   fd12,   fd32,   fd52

ifd32
```
ifd32(y)

return x = inverse of Fermi-Dirac integral of order 3/2,
y = integral[0 to inf]{ dt * t^1.5 / (exp(t-x)+1) }
accurate to about 1e-8
Interpreted function, defined at i/fermi.i   line 239

```
SEE ALSO: ifdm12,   ifd12,   ifd52,   fdm12,   fd12,   fd32,   fd52

ifd52
```
ifd52(y)

return x = inverse of Fermi-Dirac integral of order 5/2,
y = integral[0 to inf]{ dt * t^2.5 / (exp(t-x)+1) }
accurate to about 1e-8
Interpreted function, defined at i/fermi.i   line 271

```
SEE ALSO: ifdm12,   ifd12,   ifd32,   fdm12,   fd12,   fd32,   fd52

ifdm12
```
ifdm12(y)

return x = inverse of Fermi-Dirac integral of order -1/2,
y = integral[0 to inf]{ dt * t^-0.5 / (exp(t-x)+1) }
accurate to about 1e-8
Interpreted function, defined at i/fermi.i   line 173

```
SEE ALSO: ifd12,   ifd32,   ifd52,   fdm12,   fd12,   fd32,   fd52