faster and 64 bit preserving arithmetic

Message-ID: <20001213200849.B71166@plum.flirble.org>

p4raw-id: //depot/perl@8119

1 files changed, 10 insertions, 0 deletions

diff --git a/sv.h b/sv.h
index 39c1c29323..53fc1f0ad5 100644
--- a/sv.h
+++ b/sv.h
@@ -448,6 +448,9 @@ Tells and SV that it is an unsigned integer and disables all other OK bits.
 =for apidoc Am|void|SvIOK_UV|SV* sv
 Returns a boolean indicating whether the SV contains an unsigned integer.
 
+=for apidoc Am|void|SvUOK|SV* sv
+Returns a boolean indicating whether the SV contains an unsigned integer.
+
 =for apidoc Am|void|SvIOK_notUV|SV* sv
 Returns a boolean indicating whether the SV contains an signed integer.
 
@@ -562,6 +565,7 @@ Set the length of the string which is in the SV.  See C<SvCUR>.
 
 #define SvIOK_UV(sv)		((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV))	\
 				 == (SVf_IOK|SVf_IVisUV))
+#define SvUOK(sv)		SvIOK_UV(sv)
 #define SvIOK_notUV(sv)		((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV))	\
 				 == SVf_IOK)
 
@@ -714,6 +718,12 @@ and disables all other OK bits.
 #define SvMAGIC(sv)	((XPVMG*)  SvANY(sv))->xmg_magic
 #define SvSTASH(sv)	((XPVMG*)  SvANY(sv))->xmg_stash
 
+/* Ask a scalar nicely to try to become an IV, if possible.
+   Not guaranteed to stay returning void */
+/* Macro won't actually call sv_2iv if already IOK */
+#define SvIV_please(sv) \
+	STMT_START {if (!SvIOKp(sv) && (SvNOK(sv) || SvPOK(sv))) \
+		(void) SvIV(sv); } STMT_END
 #define SvIV_set(sv, val) \
 	STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
 		(((XPVIV*)  SvANY(sv))->xiv_iv = val); } STMT_END