PPT Slide

parser.f

C_BEGIN_INTRO

C CCP4 PARSER Routines

C ====================

C The PARSER module of the CCP4 library contains routines which are

C mainly used for `free-format' `keyworded' input of control data for

C programs. Most programs have a loop over input records which are

C initially fed to the routine PARSER to tokenise them and extract the

C initial keyword. PARSER can cope with continued, commented input

C lines and included files. It calls PARSE to tokenise individual

C records and PARSE is sometimes useful itself to compensate for the

C lack of free-format internal READs in the fortran77 standard. See

C the entries below for details.

C The library also contains routines to decode the parameters

C following the `standard' program keywords SYMMETRY,

C RESOLUTION,

C SCALE and CELL and to extract real and integer numbers from

C fields.

C_END_INTRO