From 85ab7c2120ba637747e860a6903ecbc8d6d2c66d Mon Sep 17 00:00:00 2001
From: "Alfred E. Heggestad" <aeh@db.org>
Date: Wed, 16 Mar 2011 21:57:52 +0000
Subject: [PATCH] patch: add pl_float()

---
 include/re_fmt.h |  1 +
 src/fmt/pl.c     | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/include/re_fmt.h b/include/re_fmt.h
index 54a274d..afc13c4 100644
--- a/include/re_fmt.h
+++ b/include/re_fmt.h
@@ -32,6 +32,7 @@ uint32_t pl_u32(const struct pl *pl);
 uint32_t pl_x32(const struct pl *pl);
 uint64_t pl_u64(const struct pl *pl);
 uint64_t pl_x64(const struct pl *pl);
+double   pl_float(const struct pl *pl);
 bool     pl_isset(const struct pl *pl);
 int      pl_strcpy(const struct pl *pl, char *str, size_t size);
 int      pl_strdup(char **dst, const struct pl *src);
diff --git a/src/fmt/pl.c b/src/fmt/pl.c
index 33ee83e..30725e0 100644
--- a/src/fmt/pl.c
+++ b/src/fmt/pl.c
@@ -186,6 +186,44 @@ uint64_t pl_x64(const struct pl *pl)
 }
 
 
+/**
+ * Convert a pointer-length object to floating point representation
+ *
+ * @param pl Pointer-length object
+ *
+ * @return Double value
+ */
+double pl_float(const struct pl *pl)
+{
+	double v=0, mul=1;
+	const char *p;
+
+	if (!pl || !pl->p)
+		return 0;
+
+	p = &pl->p[pl->l];
+
+	while (p > pl->p) {
+
+		const char ch = *--p;
+
+		if ('0' <= ch && ch <= '9') {
+			v += mul * (ch - '0');
+			mul *= 10;
+		}
+		else if (ch == '.') {
+			v /= mul;
+			mul = 1;
+		}
+		else {
+			return 0;
+		}
+	}
+
+	return v;
+}
+
+
 /**
  * Check if pointer-length object is set
  *