---
name: "abs1"
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/abs1"
---

# abs1(3)

abs1: \| real( x ) \| + \| imag( x ) \|

## NAME

abs1 - abs1: \| real( x ) \| + \| imag( x ) \|

## SYNOPSIS

### Functions

double precision function **dcabs1** (z)\
 **DCABS1**  real function **scabs1** (z)\
 **SCABS1**

## Detailed Description

## Function Documentation

### double precision function dcabs1 (complex\*16 z)

**DCABS1**

**Purpose:**

```
!>
!> DCABS1 computes |Re(.)| + |Im(.)| of a double complex number
!>
```

**Parameters**

*Z*

```
!>          Z is COMPLEX*16
!>
```

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line **46** of file **dcabs1.f**.

### real function scabs1 (complex z)

**SCABS1**

**Purpose:**

```
!>
!> SCABS1 computes |Re(.)| + |Im(.)| of a complex number
!>
```

**Parameters**

*Z*

```
!>          Z is COMPLEX
!>
```

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line **45** of file **scabs1.f**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.