---
name: "dladiv.f"
section: "3"
platform: "linux"
package: "lapack-doc"
version: "3.12.1-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/dladiv.f"
---

# dladiv.f(3)

## NAME

SRC/dladiv.f

## SYNOPSIS

### Functions/Subroutines

subroutine **dladiv** (a, b, c, d, p, q)\
 **DLADIV** performs complex division in real arithmetic, avoiding unnecessary overflow.  subroutine **dladiv1** (a, b, c, d, p, q)\
 double precision function **dladiv2** (a, b, c, d, r, t)\

## Function/Subroutine Documentation

### subroutine dladiv (double precision a, double precision b, double precision c, double precision d, double precision p, double precision q)

**DLADIV** performs complex division in real arithmetic, avoiding unnecessary overflow.

**Purpose:**

```
!>
!> DLADIV performs complex division in  real arithmetic
!>
!>                       a + i*b
!>            p + i*q = ---------
!>                       c + i*d
!>
!> The algorithm is due to Michael Baudin and Robert L. Smith
!> and can be found in the paper
!>
!>
```

**Parameters**

*A*

```
!>          A is DOUBLE PRECISION
!>
```

*B*

```
!>          B is DOUBLE PRECISION
!>
```

*C*

```
!>          C is DOUBLE PRECISION
!>
```

*D*

```
!>          D is DOUBLE PRECISION
!>          The scalars a, b, c, and d in the above expression.
!>
```

*P*

```
!>          P is DOUBLE PRECISION
!>
```

*Q*

```
!>          Q is DOUBLE PRECISION
!>          The scalars p and q in the above expression.
!>
```

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line **90** of file **dladiv.f**.

### subroutine dladiv1 (double precision a, double precision b, double precision c, double precision d, double precision p, double precision q)

Definition at line **176** of file **dladiv.f**.

### double precision function dladiv2 (double precision a, double precision b, double precision c, double precision d, double precision r, double precision t)

Definition at line **215** of file **dladiv.f**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.