From 32e25cbca210a359b09768537b6f443fe90a3070 Mon Sep 17 00:00:00 2001
From: Romain Forlot <romain.forlot@iot.bzh>
Date: Tue, 20 Jun 2017 10:24:05 +0000
Subject: Separation Generator to a dedicated repo

Change-Id: Id94831651c3266861435272a6e36c7884bef2c45
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
---
 .../using_double_on_avr/double_conversion.c        | 123 ---------------------
 1 file changed, 123 deletions(-)
 delete mode 100644 CAN-binder/libs/nanopb/examples/using_double_on_avr/double_conversion.c

(limited to 'CAN-binder/libs/nanopb/examples/using_double_on_avr/double_conversion.c')

diff --git a/CAN-binder/libs/nanopb/examples/using_double_on_avr/double_conversion.c b/CAN-binder/libs/nanopb/examples/using_double_on_avr/double_conversion.c
deleted file mode 100644
index cf79b9a0..00000000
--- a/CAN-binder/libs/nanopb/examples/using_double_on_avr/double_conversion.c
+++ /dev/null
@@ -1,123 +0,0 @@
-/* Conversion routines for platforms that do not support 'double' directly. */
-
-#include "double_conversion.h"
-#include <math.h>
-
-typedef union {
-    float f;
-    uint32_t i;
-} conversion_t;
-
-/* Note: IEE 754 standard specifies float formats as follows:
- * Single precision: sign,  8-bit exp, 23-bit frac.
- * Double precision: sign, 11-bit exp, 52-bit frac.
- */
-
-uint64_t float_to_double(float value)
-{
-    conversion_t in;
-    in.f = value;
-    uint8_t sign;
-    int16_t exponent;
-    uint64_t mantissa;
-    
-    /* Decompose input value */
-    sign = (in.i >> 31) & 1;
-    exponent = ((in.i >> 23) & 0xFF) - 127;
-    mantissa = in.i & 0x7FFFFF;
-    
-    if (exponent == 128)
-    {
-        /* Special value (NaN etc.) */
-        exponent = 1024;
-    }
-    else if (exponent == -127)
-    {
-        if (!mantissa)
-        {
-            /* Zero */
-            exponent = -1023;
-        }
-        else
-        {
-            /* Denormalized */
-            mantissa <<= 1;
-            while (!(mantissa & 0x800000))
-            {
-                mantissa <<= 1;
-                exponent--;
-            }
-            mantissa &= 0x7FFFFF;
-        }
-    }
-    
-    /* Combine fields */
-    mantissa <<= 29;
-    mantissa |= (uint64_t)(exponent + 1023) << 52;
-    mantissa |= (uint64_t)sign << 63;
-    
-    return mantissa;
-}
-
-float double_to_float(uint64_t value)
-{
-    uint8_t sign;
-    int16_t exponent;
-    uint32_t mantissa;
-    conversion_t out;
-
-    /* Decompose input value */
-    sign = (value >> 63) & 1;
-    exponent = ((value >> 52) & 0x7FF) - 1023;
-    mantissa = (value >> 28) & 0xFFFFFF; /* Highest 24 bits */
- 
-    /* Figure if value is in range representable by floats. */
-    if (exponent == 1024)
-    {
-        /* Special value */
-        exponent = 128;
-    }
-    else if (exponent > 127)
-    {
-        /* Too large */        
-        if (sign)
-            return -INFINITY;
-        else
-            return INFINITY;
-    }
-    else if (exponent < -150)
-    {
-        /* Too small */
-        if (sign)
-            return -0.0f;
-        else
-            return 0.0f;
-    }
-    else if (exponent < -126)
-    {
-        /* Denormalized */
-        mantissa |= 0x1000000;
-        mantissa >>= (-126 - exponent);
-        exponent = -127;
-    }
- 
-    /* Round off mantissa */
-    mantissa = (mantissa + 1) >> 1;
-    
-    /* Check if mantissa went over 2.0 */
-    if (mantissa & 0x800000)
-    {
-        exponent += 1;
-        mantissa &= 0x7FFFFF;
-        mantissa >>= 1;
-    }
-    
-    /* Combine fields */
-    out.i = mantissa;
-    out.i |= (uint32_t)(exponent + 127) << 23;
-    out.i |= (uint32_t)sign << 31;
-    
-    return out.f;
-}
-
-
-- 
cgit 1.2.3-korg