339 |
@deffn {Scheme Procedure} rational? x |
@deffn {Scheme Procedure} rational? x |
340 |
@deffnx {C Function} scm_real_p (x) |
@deffnx {C Function} scm_real_p (x) |
341 |
Return @code{#t} if @var{x} is a rational number, @code{#f} |
Return @code{#t} if @var{x} is a rational number, @code{#f} |
342 |
else. Note that the set of integer values forms a subset of |
otherwise. Note that the set of integer values forms a subset of |
343 |
the set of rational numbers, i. e. the predicate will also be |
the set of rational numbers, i. e. the predicate will also be |
344 |
fulfilled if @var{x} is an integer number. Real numbers |
fulfilled if @var{x} is an integer number. Real numbers |
345 |
will also satisfy this predicate, because of their limited |
will also satisfy this predicate, because of their limited |
379 |
@deffn {Scheme Procedure} complex? x |
@deffn {Scheme Procedure} complex? x |
380 |
@deffnx {C Function} scm_number_p (x) |
@deffnx {C Function} scm_number_p (x) |
381 |
Return @code{#t} if @var{x} is a complex number, @code{#f} |
Return @code{#t} if @var{x} is a complex number, @code{#f} |
382 |
else. Note that the sets of real, rational and integer |
otherwise. Note that the sets of real, rational and integer |
383 |
values form subsets of the set of complex numbers, i. e. the |
values form subsets of the set of complex numbers, i. e. the |
384 |
predicate will also be fulfilled if @var{x} is a real, |
predicate will also be fulfilled if @var{x} is a real, |
385 |
rational or integer number. |
rational or integer number. |
1443 |
@rnindex string? |
@rnindex string? |
1444 |
@deffn {Scheme Procedure} string? obj |
@deffn {Scheme Procedure} string? obj |
1445 |
@deffnx {C Function} scm_string_p (obj) |
@deffnx {C Function} scm_string_p (obj) |
1446 |
Return @code{#t} iff @var{obj} is a string, else @code{#f}. |
Return @code{#t} if @var{obj} is a string, else @code{#f}. |
1447 |
@end deffn |
@end deffn |
1448 |
|
|
1449 |
@deffn {Scheme Procedure} string-null? str |
@deffn {Scheme Procedure} string-null? str |