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6.4.1 Guile Time Utilities Reference

Guile Record: <elapsed-time> ¶

This type represents the time elapsed on a test.

Guile Predicate: elapsed-time? object ¶

Preconditions:

1. None.

Effects:

1. Check if object type is <elapsed-time>

Postconditions:

1. The returned value is #f if object type is not <elapsed-time>.

Guile Function: elapsed-time-seconds et ¶

Preconditions:

1. (elapsed-time? et) is #t.

Effects:

1. None.

Postconditions:

1. The returned value is the number of seconds stored on et.

Guile Function: elapsed-time-nanoseconds et ¶

Preconditions:

1. (elapsed-time? et) is #t.

Effects:

1. None.

Postconditions:

1. The returned value is the number of nanoseconds stored on et.

Guile Record: <time-sample> ¶

This type represents a time sample taken during the execution of a test case.

Guile Predicate: time-sample? object ¶

Preconditions:

1. None.

Effects:

1. Check if object type is <time-sample>

Postconditions:

1. The returned value is #f if object type is not <time-sample>.

Guile Function: stat-value-unit stat ¶

Preconditions:

1. (stat-value? stat) is #t.

Effects:

1. None.

Postconditions:

1. The returned value is the number of iterations stored on sample.

Guile Function: time-sample-elapsed-time sample ¶

Preconditions:

1. (time-sample? sample) is #t.

Effects:

1. None.

Postconditions:

1. The returned value is the elapsed time on stored on sample.
2. The returned value has type <elapsed-time>.