Documentation.SBV.Examples.CodeGeneration.AddSub

Simple code generation example.

Documentation

addSub :: SWord8 -> SWord8 -> (SWord8, SWord8)

Simple function that returns add/sum of args

genAddSub :: IO ()

Generate C code for addSub. Here's the output showing the generated C code:

>>> genAddSub
== BEGIN: "Makefile" ================
# Makefile for addSub. Automatically generated by SBV. Do not edit!

# include any user-defined .mk file in the current directory.
-include *.mk

CC?=gcc
CCFLAGS?=-Wall -O3 -DNDEBUG -fomit-frame-pointer

all: addSub_driver

addSub.o: addSub.c addSub.h
	${CC} ${CCFLAGS} -c $< -o $@

addSub_driver.o: addSub_driver.c
	${CC} ${CCFLAGS} -c $< -o $@

addSub_driver: addSub.o addSub_driver.o
	${CC} ${CCFLAGS} $^ -o $@

clean:
	rm -f *.o

veryclean: clean
	rm -f addSub_driver
== END: "Makefile" ==================
== BEGIN: "addSub.h" ================
/* Header file for addSub. Automatically generated by SBV. Do not edit! */

#ifndef __addSub__HEADER_INCLUDED__
#define __addSub__HEADER_INCLUDED__

#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <math.h>

/* The boolean type */
typedef bool SBool;

/* The float type */
typedef float SFloat;

/* The double type */
typedef double SDouble;

/* Unsigned bit-vectors */
typedef uint8_t  SWord8;
typedef uint16_t SWord16;
typedef uint32_t SWord32;
typedef uint64_t SWord64;

/* Signed bit-vectors */
typedef int8_t  SInt8;
typedef int16_t SInt16;
typedef int32_t SInt32;
typedef int64_t SInt64;

/* Entry point prototype: */
void addSub(const SWord8 x, const SWord8 y, SWord8 *sum,
            SWord8 *dif);

#endif /* __addSub__HEADER_INCLUDED__ */
== END: "addSub.h" ==================
== BEGIN: "addSub_driver.c" ================
/* Example driver program for addSub. */
/* Automatically generated by SBV. Edit as you see fit! */

#include <stdio.h>
#include "addSub.h"

int main(void)
{
  SWord8 sum;
  SWord8 dif;

  addSub(132, 241, &sum, &dif);

  printf("addSub(132, 241, &sum, &dif) ->\n");
  printf("  sum = %"PRIu8"\n", sum);
  printf("  dif = %"PRIu8"\n", dif);

  return 0;
}
== END: "addSub_driver.c" ==================
== BEGIN: "addSub.c" ================
/* File: "addSub.c". Automatically generated by SBV. Do not edit! */

#include "addSub.h"

void addSub(const SWord8 x, const SWord8 y, SWord8 *sum,
            SWord8 *dif)
{
  const SWord8 s0 = x;
  const SWord8 s1 = y;
  const SWord8 s2 = s0 + s1;
  const SWord8 s3 = s0 - s1;

  *sum = s2;
  *dif = s3;
}
== END: "addSub.c" ==================