From 7f7a412e8467399eda03fbeed0ff5de9c22b009f Mon Sep 17 00:00:00 2001
From: Andrey Nakin <andrey.nakin@gmail.com>
Date: 周六, 18 4月 2015 21:13:06 +0800
Subject: [PATCH] 	modified:   libscpi/inc/scpi/config.h

---
 libscpi/inc/scpi/config.h |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)

diff --git a/libscpi/inc/scpi/config.h b/libscpi/inc/scpi/config.h
index 177a5bb..92b544b 100644
--- a/libscpi/inc/scpi/config.h
+++ b/libscpi/inc/scpi/config.h
@@ -98,6 +98,25 @@
 #endif
 
 #if HAVE_DTOSTRE
+
+char * dtostre(
+	double __val,
+	char * __s,
+	unsigned char __prec,
+	unsigned char __flags);
+
+#ifndef DTOSTRE_ALWAYS_SIGN
+#define	DTOSTRE_ALWAYS_SIGN 0x01
+#endif
+
+#ifndef DTOSTR_PLUS_SIGN
+#define	DTOSTR_PLUS_SIGN 0x02
+#endif
+
+#ifndef DTOSTR_UPPERCASE
+#define	DTOSTR_UPPERCASE 0x04
+#endif
+
 #define SCPI_doubleToStr(v, s, l) strlen(dtostre((v), (s), 6, DTOSTR_PLUS_SIGN | DTOSTRE_ALWAYS_SIGN | DTOSTR_UPPERCASE))
 #else
 #define SCPI_doubleToStr(v, s, l) snprintf((s), (l), "%lg", (v))

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