Recognise (or not) a number. The type of the number is returned
(0 if unrecognised), otherwise it is a bit-ORed combination of
IS_NUMBER_IN_UV, IS_NUMBER_GREATER_THAN_UV_MAX, IS_NUMBER_NOT_INT,
-IS_NUMBER_NEG, IS_NUMBER_INFINITY (defined in perl.h).
+IS_NUMBER_NEG, IS_NUMBER_INFINITY, IS_NUMBER_NAN (defined in perl.h).
If the value of the number can fit an in UV, it is returned in the *valuep
IS_NUMBER_IN_UV will be set to indicate that *valuep is valid, IS_NUMBER_IN_UV
=for hackers
Found in file sv.c
-=item newSV
-
-Create a new null SV, or if len > 0, create a new empty SVt_PV type SV
-with an initial PV allocation of len+1. Normally accessed via the C<NEWSV>
-macro.
-
- SV* newSV(STRLEN len)
-
-=for hackers
-Found in file sv.c
-
=item NEWSV
Creates a new SV. A non-zero C<len> parameter indicates the number of
=for hackers
Found in file handy.h
+=item newSV
+
+Create a new null SV, or if len > 0, create a new empty SVt_PV type SV
+with an initial PV allocation of len+1. Normally accessed via the C<NEWSV>
+macro.
+
+ SV* newSV(STRLEN len)
+
+=for hackers
+Found in file sv.c
+
=item newSViv
Creates a new SV and copies an integer into it. The reference count for the
=for hackers
Found in file sv.h
-=item SvIVX
+=item SvIVx
-Returns the raw value in the SV's IV slot, without checks or conversions.
-Only use when you are sure SvIOK is true. See also C<SvIV()>.
+Coerces the given SV to an integer and returns it. Guarantees to evaluate
+sv only once. Use the more efficent C<SvIV> otherwise.
- IV SvIVX(SV* sv)
+ IV SvIVx(SV* sv)
=for hackers
Found in file sv.h
-=item SvIVx
+=item SvIVX
-Coerces the given SV to an integer and returns it. Guarantees to evaluate
-sv only once. Use the more efficent C<SvIV> otherwise.
+Returns the raw value in the SV's IV slot, without checks or conversions.
+Only use when you are sure SvIOK is true. See also C<SvIV()>.
- IV SvIVx(SV* sv)
+ IV SvIVX(SV* sv)
=for hackers
Found in file sv.h
=for hackers
Found in file sv.h
-=item SvPVX
+=item SvPVx
-Returns a pointer to the physical string in the SV. The SV must contain a
-string.
+A version of C<SvPV> which guarantees to evaluate sv only once.
- char* SvPVX(SV* sv)
+ char* SvPVx(SV* sv, STRLEN len)
=for hackers
Found in file sv.h
-=item SvPVx
+=item SvPVX
-A version of C<SvPV> which guarantees to evaluate sv only once.
+Returns a pointer to the physical string in the SV. The SV must contain a
+string.
- char* SvPVx(SV* sv, STRLEN len)
+ char* SvPVX(SV* sv)
=for hackers
Found in file sv.h
=for hackers
Found in file sv.h
-=item svtype
+=item SvTYPE
-An enum of flags for Perl types. These are found in the file B<sv.h>
-in the C<svtype> enum. Test these flags with the C<SvTYPE> macro.
+Returns the type of the SV. See C<svtype>.
+
+ svtype SvTYPE(SV* sv)
=for hackers
Found in file sv.h
-=item SvTYPE
-
-Returns the type of the SV. See C<svtype>.
+=item svtype
- svtype SvTYPE(SV* sv)
+An enum of flags for Perl types. These are found in the file B<sv.h>
+in the C<svtype> enum. Test these flags with the C<SvTYPE> macro.
=for hackers
Found in file sv.h
=item sv_2mortal
-Marks an existing SV as mortal. The SV will be destroyed when the current
-context ends. See also C<sv_newmortal> and C<sv_mortalcopy>.
+Marks an existing SV as mortal. The SV will be destroyed "soon", either
+by an explicit call to FREETMPS, or by an implicit call at places such as
+statement boundaries. See also C<sv_newmortal> and C<sv_mortalcopy>.
SV* sv_2mortal(SV* sv)
=item sv_mortalcopy
Creates a new SV which is a copy of the original SV (using C<sv_setsv>).
-The new SV is marked as mortal. It will be destroyed when the current
-context ends. See also C<sv_newmortal> and C<sv_2mortal>.
+The new SV is marked as mortal. It will be destroyed "soon", either by an
+explicit call to FREETMPS, or by an implicit call at places such as
+statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>.
SV* sv_mortalcopy(SV* oldsv)
=item sv_newmortal
Creates a new null SV which is mortal. The reference count of the SV is
-set to 1. It will be destroyed when the current context ends. See
-also C<sv_mortalcopy> and C<sv_2mortal>.
+set to 1. It will be destroyed "soon", either by an explicit call to
+FREETMPS, or by an implicit call at places such as statement boundaries.
+See also C<sv_mortalcopy> and C<sv_2mortal>.
SV* sv_newmortal()
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