---
name: "second_INT_ETIME.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/second_INT_ETIME.f"
---

# second\_INT\_ETIME.f(3)

## NAME

INSTALL/second\_INT\_ETIME.f

## SYNOPSIS

### Functions/Subroutines

real function **second** ()\
 **SECOND** Using ETIME

## Function/Subroutine Documentation

### real function second

**SECOND** Using ETIME **SECOND** returns nothing

**SECOND** Using the INTERNAL function ETIME.

**SECOND** Using INTERNAL function CPU\_TIME.

**SECOND** Using ETIME\_

**Purpose:**

```
!>
!>  SECOND returns the user time for a process in seconds.
!>  This version gets the time from the EXTERNAL system function ETIME.
!>
```

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Purpose:**

```
!>
!>  SECOND returns the user time for a process in seconds.
!>  This version gets the time from the system function ETIME_.
!>
```

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Purpose:**

```
!>
!>  SECOND returns the user time for a process in seconds.
!>  This version gets the time from the INTERNAL function CPU_TIME.
!>
```

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Purpose:**

```
!>
!>  SECOND returns the user time for a process in seconds.
!>  This version gets the time from the INTERNAL function ETIME.
!>
```

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Purpose:**

```
!>
!>  SECOND returns nothing instead of returning the user time for a process in seconds.
!>  If you are using that routine, it means that neither EXTERNAL ETIME,
!>  EXTERNAL ETIME_, INTERNAL ETIME, INTERNAL CPU_TIME is available  on
!>  your machine.
!>
```

**Author**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line **34** of file **second\_EXT\_ETIME.f**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.