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https://gitlab.rtems.org/rtems/rtos/rtems.git
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130 lines
2.6 KiB
C
130 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-with-RTEMS-exception */
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/*
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* COPYRIGHT (c) 2009.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <errno.h>
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#include <limits.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <math.h>
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#include <rtems/rtems/status.h>
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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/*
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* This file is designed to be included multiple times to instantiate
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* it and should NOT be protected against multiple inclusions.
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*/
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#if !defined( STRING_TO_FLOAT ) && !defined( STRING_TO_INTEGER )
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#error "Neither STRING_TO_FLOAT nor STRING_TO_INTEGER defined"
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#endif
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#if defined( STRING_TO_FLOAT ) && defined( STRING_TO_INTEGER )
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#error "Both STRING_TO_FLOAT nor STRING_TO_INTEGER defined"
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#endif
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#ifndef STRING_TO_TYPE
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#error "STRING_TO_TYPE not defined"
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#endif
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#ifndef STRING_TO_NAME
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#error "STRING_TO_NAME not defined"
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#endif
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#ifndef STRING_TO_METHOD
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#error "STRING_TO_METHOD not defined"
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#endif
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#ifndef STRING_TO_MAX
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#error "STRING_TO_MAX not defined"
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#endif
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#undef ZERO
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#ifdef STRING_TO_FLOAT
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#define ZERO 0.0
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#elif defined( STRING_TO_INTEGER )
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#define ZERO 0
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#endif
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rtems_status_code STRING_TO_NAME(
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const char *s,
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STRING_TO_TYPE *n,
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char **endptr
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#if defined( STRING_TO_INTEGER )
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,
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int base
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#endif
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)
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{
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#ifdef STRING_TO_RESULT_TYPE
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STRING_TO_RESULT_TYPE result;
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#else
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STRING_TO_TYPE result;
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#endif
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char *end;
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if ( NULL == n ) {
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return RTEMS_INVALID_ADDRESS;
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}
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errno = 0;
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*n = 0;
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#ifdef STRING_TO_FLOAT
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result = STRING_TO_METHOD( s, &end );
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#elif defined( STRING_TO_INTEGER )
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result = STRING_TO_METHOD( s, &end, base );
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#endif
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/* If the user wants the end pointer back, then return it. */
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if ( endptr ) {
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*endptr = end;
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}
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/* nothing was converted */
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if ( end == s ) {
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return RTEMS_NOT_DEFINED;
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}
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/* there was a conversion error */
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if ( ( result == ZERO ) && errno ) {
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return RTEMS_INVALID_NUMBER;
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}
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#ifdef STRING_TO_MAX
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/* there was an overflow */
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if ( ( result == STRING_TO_MAX ) && ( errno == ERANGE ) ) {
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return RTEMS_INVALID_NUMBER;
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}
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#endif
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#ifdef STRING_TO_MIN
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/* there was an underflow */
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if ( ( result == STRING_TO_MIN ) && ( errno == ERANGE ) ) {
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return RTEMS_INVALID_NUMBER;
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}
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#endif
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#ifdef STRING_TO_UCHAR_MAX
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/* special case for uchar */
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if ( result > STRING_TO_UCHAR_MAX ) {
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errno = ERANGE;
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return RTEMS_INVALID_NUMBER;
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}
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#endif
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*n = result;
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return RTEMS_SUCCESSFUL;
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}
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