bslathi19/cc65
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Some more floating point support.

Browse Source 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3886 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz
2008-08-11 17:51:00 +00:00
parent 0b60ac4716
commit 0b4f6426e2
11 changed files with 448 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

241
src/common/fp.c Normal file
View File

@@ -0,0 +1,241 @@
/*****************************************************************************/
/* */
/* fp.c */
/* */
/* Floating point support */
/* */
/* */
/* */
/* (C) 2008 Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
/* The compiler must use the same floating point arithmetic as the target
* platform, otherwise expressions will yield a different result when
* evaluated in the compiler or on the target platform. Since writing a target
* and source library is almost double the work, we will at least add the
* hooks here, and define functions for a plug in library that may be added
* at a later time. Currently we use the builtin data types of the compiler
* that translates cc65.
*/
#include <string.h>
/* common */
#include "fp.h"
#include "xmalloc.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
#define F_SIZE sizeof(float)
#define D_SIZE sizeof(float) /* NOT double! */
/*****************************************************************************/
/* Code */
/*****************************************************************************/
size_t FP_F_Size (void)
/* Return the size of the data type float */
{
return F_SIZE;
}
unsigned char* FP_F_Data (Float Val)
/* Return the raw data of a float in a malloc'ed buffer. Free after use. */
{
return memcpy (xmalloc (F_SIZE), &Val.V, F_SIZE);
}
Float FP_F_Make (float Val)
/* Make a floating point variable from a float value */
{
Float D;
D.V = Val;
return D;
}
Float FP_F_FromInt (long Val)
/* Convert an integer into a floating point variable */
{
Float D;
D.V = Val;
return D;
}
float FP_F_ToFloat (Float Val)
/* Convert a Float into a native float */
{
return Val.V;
}
Float FP_F_Add (Float Left, Float Right)
/* Add two floats */
{
Float D;
D.V = Left.V + Right.V;
return D;
}
Float FP_F_Sub (Float Left, Float Right)
/* Subtract two floats */
{
Float D;
D.V = Left.V - Right.V;
return D;
}
Float FP_F_Mul (Float Left, Float Right)
/* Multiplicate two floats */
{
Float D;
D.V = Left.V * Right.V;
return D;
}
Float FP_F_Div (Float Left, Float Right)
/* Divide two floats */
{
Float D;
D.V = Left.V / Right.V;
return D;
}
size_t FP_D_Size (void)
/* Return the size of the data type double */
{
return D_SIZE;
}
unsigned char* FP_D_Data (Double Val)
/* Return the raw data of a double in a malloc'ed buffer. Free after use. */
{
float F = Val.V;
return memcpy (xmalloc (F_SIZE), &F, F_SIZE);
}
Double FP_D_Make (double Val)
/* Make a floating point variable from a float value */
{
Double D;
D.V = Val;
return D;
}
Double FP_D_FromInt (long Val)
/* Convert an integer into a floating point variable */
{
Double D;
D.V = Val;
return D;
}
double FP_D_ToFloat (Double Val)
/* Convert a Double into a native double */
{
return Val.V;
}
Double FP_D_Add (Double Left, Double Right)
/* Add two floats */
{
Double D;
D.V = Left.V + Right.V;
return D;
}
Double FP_D_Sub (Double Left, Double Right)
/* Subtract two floats */
{
Double D;
D.V = Left.V - Right.V;
return D;
}
Double FP_D_Mul (Double Left, Double Right)
/* Multiplicate two floats */
{
Double D;
D.V = Left.V * Right.V;
return D;
}
Double FP_D_Div (Double Left, Double Right)
/* Divide two floats */
{
Double D;
D.V = Left.V / Right.V;
return D;
}

147
src/common/fp.h Normal file
View File

@@ -0,0 +1,147 @@
/*****************************************************************************/
/* */
/* fp.h */
/* */
/* Floating point support */
/* */
/* */
/* */
/* (C) 2008 Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
/* The compiler must use the same floating point arithmetic as the target
* platform, otherwise expressions will yield a different result when
* evaluated in the compiler or on the target platform. Since writing a target
* and source library is almost double the work, we will at least add the
* hooks here, and define functions for a plug in library that may be added
* at a later time. Currently we use the builtin data types of the compiler
* that translates cc65.
*
* BEWARE: This code will currently only work on little endian systems!
*
*/
#ifndef FP_H
#define FP_H
#include <stddef.h>
/*****************************************************************************/
/* Data */
/*****************************************************************************/
typedef union Float Float;
union Float {
float V;
};
typedef union Double Double;
union Double {
double V;
};
/*****************************************************************************/
/* Code */
/*****************************************************************************/
size_t FP_F_Size (void);
/* Return the size of the data type float */
unsigned char* FP_F_Data (Float Val);
/* Return the raw data of a float in a malloc'ed buffer. Free after use. */
Float FP_F_Make (float Val);
/* Make a floating point variable from a float value */
Float FP_F_FromInt (long Val);
/* Convert an integer into a floating point variable */
float FP_F_ToFloat (Float Val);
/* Convert a Float into a native float */
Float FP_F_Add (Float Left, Float Right);
/* Add two floats */
Float FP_F_Sub (Float Left, Float Right);
/* Subtract two floats */
Float FP_F_Mul (Float Left, Float Right);
/* Multiplicate two floats */
Float FP_F_Div (Float Left, Float Right);
/* Divide two floats */
size_t FP_D_Size (void);
/* Return the size of the data type double */
unsigned char* FP_D_Data (Double Val);
/* Return the raw data of a double in a malloc'ed buffer. Free after use. */
Double FP_D_Make (double Val);
/* Make a floating point variable from a float value */
Double FP_D_FromInt (long Val);
/* Convert an integer into a floating point variable */
double FP_D_ToFloat (Double Val);
/* Convert a Double into a native double */
Double FP_D_Add (Double Left, Double Right);
/* Add two floats */
Double FP_D_Sub (Double Left, Double Right);
/* Subtract two floats */
Double FP_D_Mul (Double Left, Double Right);
/* Multiplicate two floats */
Double FP_D_Div (Double Left, Double Right);
/* Divide two floats */
/* End of fp.h */
#endif

1
src/common/make/gcc.mak
View File

@@ -22,6 +22,7 @@ OBJS = abend.o \
filepos.o \
filetype.o \
fname.o \
fp.o \
hashstr.o \
hashtab.o \
intstack.o \

1
src/common/make/watcom.mak
View File

@@ -68,6 +68,7 @@ OBJS = abend.obj \
filepos.obj \
filetype.obj \
fname.obj \
fp.obj \
hashstr.obj \
hashtab.obj \
intstack.obj \