Core string utilities with minimal dependencies
Convert string to lowercase (ASCII A-Z)
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| character(len=*), | intent(in) | :: | input | 
Case-insensitive parse for common boolean-ish strings.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| character(len=*), | intent(in) | :: | env_value |