MINOR: tools: add a float-to-ascii conversion function
We already had ultoa_r() and friends but nothing to emit inline floats.
This is now done with ftoa_r() and F2A/F2H. Note that the latter both use
the itoa_str[] as temporary storage and that the HTML format currently is
the exact same as the ASCII one. The trailing zeroes are always timmed so
these outputs are usable in user-visible output.
diff --git a/src/tools.c b/src/tools.c
index e94fed7..de5dfa8 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -568,6 +568,17 @@
return trim - buffer;
}
+/*
+ * This function simply returns a locally allocated string containing
+ * the ascii representation for number 'n' in decimal with useless trailing
+ * zeroes trimmed.
+ */
+char *ftoa_r(double n, char *buffer, int size)
+{
+ flt_trim(buffer, 0, snprintf(buffer, size, "%f", n));
+ return buffer;
+}
+
/* returns a locally allocated string containing the quoted encoding of the
* input string. The output may be truncated to QSTR_SIZE chars, but it is
* guaranteed that the string will always be properly terminated. Quotes are