From da3c5a5aa0e139aa68f51bec4d8c0763a99c908e Mon Sep 17 00:00:00 2001
From: divverent <divverent@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Wed, 11 Apr 2012 13:34:44 +0000
Subject: [PATCH] PRVM_64: make savegames precision-loss-less
git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@11792 d7cf8633-e32d-0410-b094-e92efae38249
---
clvm_cmds.c | 2 +-
prvm_edict.c | 4 ++--
quakedef.h | 4 ++++
3 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/clvm_cmds.c b/clvm_cmds.c
index c765ca25..e5cfe011 100644
--- a/clvm_cmds.c
+++ b/clvm_cmds.c
@@ -1602,7 +1602,7 @@ static void VM_CL_getplayerkey (prvm_prog_t *prog)
{
vec3_t origin;
Matrix4x4_OriginFromMatrix(&e->render.matrix, origin);
- dpsnprintf(t, sizeof(t), "%.9g %.9g %.9g", origin[0], origin[1], origin[2]);
+ dpsnprintf(t, sizeof(t), VECTOR_LOSSLESS_FORMAT, origin[0], origin[1], origin[2]);
}
}
if(!t[0])
diff --git a/prvm_edict.c b/prvm_edict.c
index 4d20f1c1..82392bbf 100644
--- a/prvm_edict.c
+++ b/prvm_edict.c
@@ -526,10 +526,10 @@ char *PRVM_UglyValueString (prvm_prog_t *prog, etype_t type, prvm_eval_t *val, c
dpsnprintf (line, linelength, "void");
break;
case ev_float:
- dpsnprintf (line, linelength, "%.9g", val->_float);
+ dpsnprintf (line, linelength, FLOAT_LOSSLESS_FORMAT, val->_float);
break;
case ev_vector:
- dpsnprintf (line, linelength, "%.9g %.9g %.9g", val->vector[0], val->vector[1], val->vector[2]);
+ dpsnprintf (line, linelength, VECTOR_LOSSLESS_FORMAT, val->vector[0], val->vector[1], val->vector[2]);
break;
default:
dpsnprintf (line, linelength, "bad type %i", type);
diff --git a/quakedef.h b/quakedef.h
index a3ba79f3..acd0a909 100644
--- a/quakedef.h
+++ b/quakedef.h
@@ -553,8 +553,12 @@ void Sys_Shared_Init(void);
#ifdef PRVM_64
#define FLOAT_IS_TRUE_FOR_INT(x) ((x) & 0x7FFFFFFFFFFFFFFF) // also match "negative zero" doubles of value 0x8000000000000000
+#define FLOAT_LOSSLESS_FORMART "%.17g"
+#define VECTOR_LOSSLESS_FORMART "%.17g %.17g %.17g"
#else
#define FLOAT_IS_TRUE_FOR_INT(x) ((x) & 0x7FFFFFFF) // also match "negative zero" floats of value 0x80000000
+#define FLOAT_LOSSLESS_FORMART "%.9g"
+#define VECTOR_LOSSLESS_FORMART "%.9g %.9g %.9g"
#endif
#endif
--
2.39.5