From e5ea84c1ff2e67ee8ea45736ba95c9198eb0406b Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Wed, 6 Feb 2019 17:05:01 -0600
Subject: [PATCH] libs/libc/stdio:  A few more coding standard fixes for
 nano-printf file:  all global data names must begin with g_.  All structure
 names must end with _s.

---
 libs/libc/stdio/nano_dtoa_data.c    |  6 +++---
 libs/libc/stdio/nano_dtoa_engine.c  |  8 ++++----
 libs/libc/stdio/nano_dtoa_engine.h  | 10 +++++-----
 libs/libc/stdio/nano_libvsprintf.c  |  2 +-
 libs/libc/stdio/nano_ultoa_invert.h |  4 ++--
 5 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/libs/libc/stdio/nano_dtoa_data.c b/libs/libc/stdio/nano_dtoa_data.c
index cb8d5ec3a9..d31ff04037 100644
--- a/libs/libc/stdio/nano_dtoa_data.c
+++ b/libs/libc/stdio/nano_dtoa_data.c
@@ -68,7 +68,7 @@
  * Public Data
  ****************************************************************************/
 
-const double __dtoa_scale_up[] =
+const double g_dtoa_scale_up[] =
 {
 #if DBL_MAX_10_EXP >= 1
   1e1,
@@ -123,7 +123,7 @@ const double __dtoa_scale_up[] =
 #endif
 };
 
-const double __dtoa_scale_down[] =
+const double g_dtoa_scale_down[] =
 {
 #if DBL_MIN_10_EXP <= -1
   1e-1,
@@ -178,7 +178,7 @@ const double __dtoa_scale_down[] =
 #endif
 };
 
-const double __dtoa_round[] =
+const double g_dtoa_round[] =
 {
 #if DBL_DIG >= 30
   5e30,
diff --git a/libs/libc/stdio/nano_dtoa_engine.c b/libs/libc/stdio/nano_dtoa_engine.c
index dc4d3578d5..a04ce4dcce 100644
--- a/libs/libc/stdio/nano_dtoa_engine.c
+++ b/libs/libc/stdio/nano_dtoa_engine.c
@@ -63,7 +63,7 @@
  * Public Functions
  ****************************************************************************/
 
-int __dtoa_engine(double x, FAR struct dtoa *dtoa, int max_digits,
+int __dtoa_engine(double x, FAR struct dtoa_s *dtoa, int max_digits,
                   int max_decimals)
 {
   int32_t exp = 0;
@@ -104,7 +104,7 @@ int __dtoa_engine(double x, FAR struct dtoa *dtoa, int max_digits,
         {
           for (i = DTOA_SCALE_UP_NUM - 1; i >= 0; i--)
             {
-              y = x * __dtoa_scale_up[i];
+              y = x * g_dtoa_scale_up[i];
               if (y < MAX_MANT)
                 {
                   x = y;
@@ -116,7 +116,7 @@ int __dtoa_engine(double x, FAR struct dtoa *dtoa, int max_digits,
         {
           for (i = DTOA_SCALE_DOWN_NUM - 1; i >= 0; i--)
             {
-              y = x * __dtoa_scale_down[i];
+              y = x * g_dtoa_scale_down[i];
               if (y >= MIN_MANT)
                 {
                   x = y;
@@ -139,7 +139,7 @@ int __dtoa_engine(double x, FAR struct dtoa *dtoa, int max_digits,
        * int. Check for overflow and adjust mantissa and exponent values
        */
 
-      x = x + __dtoa_round[max_digits];
+      x = x + g_dtoa_round[max_digits];
 
       if (x >= MAX_MANT)
         {
diff --git a/libs/libc/stdio/nano_dtoa_engine.h b/libs/libc/stdio/nano_dtoa_engine.h
index 9f2b54a468..9ce3f1c2d9 100644
--- a/libs/libc/stdio/nano_dtoa_engine.h
+++ b/libs/libc/stdio/nano_dtoa_engine.h
@@ -164,7 +164,7 @@
  * Public Types
  ****************************************************************************/
 
-struct dtoa
+struct dtoa_s
 {
   int32_t exp;
   uint8_t flags;
@@ -175,15 +175,15 @@ struct dtoa
  * Public Data
  ****************************************************************************/
 
-extern const double __dtoa_scale_up[];
-extern const double __dtoa_scale_down[];
-extern const double __dtoa_round[];
+extern const double g_dtoa_scale_up[];
+extern const double g_dtoa_scale_down[];
+extern const double g_dtoa_round[];
 
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/
 
-int __dtoa_engine(double x, FAR struct dtoa *dtoa, int max_digits,
+int __dtoa_engine(double x, FAR struct dtoa_s *dtoa, int max_digits,
                   int max_decimals);
 
 #endif /* __LIBS_LIBC_STDIO_NANO_DTOA_ENGINE_H */
diff --git a/libs/libc/stdio/nano_libvsprintf.c b/libs/libc/stdio/nano_libvsprintf.c
index f934b7b22d..026e567fb4 100644
--- a/libs/libc/stdio/nano_libvsprintf.c
+++ b/libs/libc/stdio/nano_libvsprintf.c
@@ -329,7 +329,7 @@ int lib_vsprintf(FAR struct lib_outstream_s *stream,
   {
     unsigned char __buf[11];  /* Size for -1 in octal, without '\0' */
 #  if PRINTF_LEVEL >= PRINTF_FLT
-    struct dtoa __dtoa;
+    struct dtoa_s __dtoa;
 #  endif
   } u;
   const char *pnt;
diff --git a/libs/libc/stdio/nano_ultoa_invert.h b/libs/libc/stdio/nano_ultoa_invert.h
index 0c07cb96c1..634d2eb88a 100644
--- a/libs/libc/stdio/nano_ultoa_invert.h
+++ b/libs/libc/stdio/nano_ultoa_invert.h
@@ -48,8 +48,8 @@
 
 /* Next flags are to use with `base'. Unused fields are reserved. */
 
-#define XTOA_PREFIX       0x0100  /* Put prefix for octal or hex  */
-#define XTOA_UPPER        0x0200  /* Use upper case letters   */
+#define XTOA_PREFIX  0x0100    /* Put prefix for octal or hex */
+#define XTOA_UPPER   0x0200    /* Use upper case letters */
 
 /****************************************************************************
  * Public Function Prototypes