msousa@597: /*
msousa@597: * matiec - a compiler for the programming languages defined in IEC 61131-3
msousa@597: * Copyright (C) 2003-2011 Mario de Sousa (msousa@fe.up.pt)
msousa@597: * Copyright (C) 2007-2011 Laurent Bessard and Edouard Tisserant
msousa@597: *
msousa@597: * This program is free software: you can redistribute it and/or modify
msousa@597: * it under the terms of the GNU General Public License as published by
msousa@597: * the Free Software Foundation, either version 3 of the License, or
msousa@597: * (at your option) any later version.
msousa@597: *
msousa@597: * This program is distributed in the hope that it will be useful,
msousa@597: * but WITHOUT ANY WARRANTY; without even the implied warranty of
msousa@597: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
msousa@597: * GNU General Public License for more details.
msousa@597: *
msousa@597: * You should have received a copy of the GNU General Public License
msousa@597: * along with this program. If not, see .
msousa@597: *
msousa@597: *
msousa@597: * This code is made available on the understanding that it will not be
msousa@597: * used in safety-critical situations without a full and competent review.
msousa@597: */
msousa@597:
msousa@597: /*
msousa@597: * An IEC 61131-3 compiler.
msousa@597: *
msousa@597: * Based on the
msousa@597: * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
msousa@597: *
msousa@597: */
msousa@597:
msousa@597:
msousa@597:
msousa@597: #ifndef _MAIN_HH
msousa@597: #define _MAIN_HH
msousa@597:
msousa@604:
msousa@604:
msousa@597: /* Function used throughout the code --> used to report failed assertions (i.e. internal compiler errors)! */
msousa@604: #include /* required for NULL */
msousa@604:
msousa@597: #define ERROR error_exit(__FILE__,__LINE__)
agraeper@654: #define ERROR_MSG(msg, ...) error_exit(__FILE__,__LINE__, msg, ## __VA_ARGS__)
msousa@597:
msousa@597: extern void error_exit(const char *file_name, int line_no, const char *errmsg = NULL, ...);
msousa@597:
msousa@597:
msousa@597:
msousa@597:
msousa@607: /* Get the definition of INT16_MAX, INT16_MIN, UINT64_MAX, INT64_MAX, INT64_MIN, ... */
msousa@607:
msousa@607: #define __STDC_LIMIT_MACROS /* required to have UINTxx_MAX defined when including stdint.h from C++ source code. */
msousa@607: #include
msousa@607: #include
msousa@607:
msousa@607: #ifndef UINT64_MAX
msousa@607: #define UINT64_MAX (std::numeric_limits< uint64_t >::max())
msousa@607: #endif
msousa@607: #ifndef INT64_MAX
msousa@607: #define INT64_MAX (std::numeric_limits< int64_t >::max())
msousa@607: #endif
msousa@607: #ifndef INT64_MIN
msousa@607: #define INT64_MIN (std::numeric_limits< int64_t >::min())
msousa@607: #endif
msousa@607:
msousa@607:
msousa@607:
msousa@607: /* Determine, for the current platform, which datas types (float, double or long double) use 64 and 32 bits. */
msousa@607: /* NOTE: We cant use sizeof() in pre-processor directives, so we have to do it another way... */
msousa@607: /* CURIOSITY: We can use sizeof() and offsetof() inside static_assert() but:
msousa@607: * - this only allows us to make assertions, and not #define new macros
msousa@607: * - is only available in the C standard [ISO/IEC 9899:2011] and the C++ 0X draft standard [Becker 2008]. It is not available in C99.
msousa@607: * https://www.securecoding.cert.org/confluence/display/seccode/DCL03-C.+Use+a+static+assertion+to+test+the+value+of+a+constant+expression
msousa@607: * struct {int a, b, c, d} header_t;
msousa@607: * e.g.: static_assert(offsetof(struct header_t, c) == 8, "Compile time error message.");
msousa@607: */
msousa@607:
msousa@607: #include
msousa@607: #if (LDBL_MANT_DIG == 53) /* NOTE: 64 bit IEC559 real has 53 bits for mantissa! */
msousa@607: #define long_double long double
msousa@607: #define real64_t long_double /* so we can later use #if (real64_t == long_double) directives in the code! */
msousa@607: #define REAL64_MAX LDBL_MAX
msousa@607: #elif ( DBL_MANT_DIG == 53) /* NOTE: 64 bit IEC559 real has 53 bits for mantissa! */
msousa@607: #define real64_t double
msousa@607: #define REAL64_MAX DBL_MAX
msousa@607: #elif ( FLT_MANT_DIG == 53) /* NOTE: 64 bit IEC559 real has 53 bits for mantissa! */
msousa@607: #define real64_t float
msousa@607: #define REAL64_MAX FLT_MAX
msousa@607: #else
msousa@607: #error Could not find a 64 bit floating point data type on this platform. Aborting...
msousa@607: #endif
msousa@607:
msousa@607:
msousa@607: #if (LDBL_MANT_DIG == 24) /* NOTE: 32 bit IEC559 real has 24 bits for mantissa! */
msousa@607: #ifndef long_double
msousa@607: #define long_double long double
msousa@607: #endif
msousa@607: #define real32_t long_double /* so we can later use #if (real32_t == long_double) directives in the code! */
msousa@607: #define REAL32_MAX LDBL_MAX
msousa@607: #elif ( DBL_MANT_DIG == 24) /* NOTE: 32 bit IEC559 real has 24 bits for mantissa! */
msousa@607: #define real32_t double
msousa@607: #define REAL32_MAX DBL_MAX
msousa@607: #elif ( FLT_MANT_DIG == 24) /* NOTE: 32 bit IEC559 real has 24 bits for mantissa! */
msousa@607: #define real32_t float
msousa@607: #define REAL32_MAX FLT_MAX
msousa@607: #else
msousa@607: #error Could not find a 32 bit floating point data type on this platform. Aborting...
msousa@607: #endif
msousa@607:
msousa@607:
msousa@607:
msousa@607: #include
msousa@607: #ifndef INFINITY
msousa@607: #error Could not find the macro that defines the value for INFINITY in the current platform.
msousa@607: #endif
msousa@607: #ifndef NAN
msousa@607: #error Could not find the macro that defines the value for NAN in the current platform.
msousa@607: #endif
msousa@607:
msousa@607:
msousa@607:
msousa@645: /* get the printf format macros for printing variables of fixed data size
msousa@645: * e.g. int64_t v; printf("value=%"PRId64" !!\n", v);
msousa@645: * e.g. uint64_t v; printf("value=%"PRIu64" !!\n", v);
msousa@645: * e.g. uint64_t v; printf("value=%"PRIx64" !!\n", v); // hexadecimal format
msousa@645: */
msousa@645: #define __STDC_FORMAT_MACROS
msousa@645: #include
msousa@607:
msousa@607:
agraeper@654: #endif // #ifndef _MAIN_HH