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strtold_subr.c revision 1.1 
      1 /* $NetBSD: strtold_subr.c,v 1.1 2006/03/15 17:35:18 kleink Exp $ */
      2 
      3 /*
      4  * Written by Klaus Klein <kleink (at) NetBSD.org>, November 16, 2005.
      5  * Public domain.
      6  */
      7 
      8 /*
      9  * NOTICE: This is not a standalone file.  To use it, #include it in
     10  * the format-specific strtold_*.c, like so:
     11  *
     12  *	#define GDTOA_LD_FMT	<gdtoa extended-precision format code>
     13  *	#include "strtold_subr.c"
     14  */
     15 
     16 #include <sys/cdefs.h>
     17 #if defined(LIBC_SCCS) && !defined(lint)
     18 __RCSID("$NetBSD: strtold_subr.c,v 1.1 2006/03/15 17:35:18 kleink Exp $");
     19 #endif /* LIBC_SCCS and not lint */
     20 
     21 #include "namespace.h"
     22 #include <math.h>
     23 #include <stdlib.h>
     24 #include "gdtoa.h"
     25 
     26 #ifdef __weak_alias
     27 __weak_alias(strtold, _strtold)
     28 #endif
     29 
     30 #ifndef __HAVE_LONG_DOUBLE
     31 #error no extended-precision long double type
     32 #endif
     33 
     34 #ifndef GDTOA_LD_FMT
     35 #error GDTOA_LD_FMT must be defined by format-specific source file
     36 #endif
     37 
     38 #define	STRTOP(x)	__CONCAT(strtop, x)
     39 
     40 long double
     41 strtold(const char *nptr, char **endptr)
     42 {
     43 	long double ld;
     44 
     45 	(void)STRTOP(GDTOA_LD_FMT)(nptr, endptr, &ld);
     46 	return ld;
     47 }
     48