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      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 #include  <LibConfig.h>
     16 #include  <sys/EfiCdefs.h>
     17 
     18 #include  "namespace.h"
     19 #include  <math.h>
     20 #include  <sys/stdint.h>
     21 #include  <stdlib.h>
     22 #include  "gdtoa.h"
     23 
     24 #ifdef __weak_alias
     25 __weak_alias(strtold, _strtold)
     26 #endif
     27 
     28 #ifndef __HAVE_LONG_DOUBLE
     29 #error no extended-precision long double type
     30 #endif
     31 
     32 #ifndef GDTOA_LD_FMT
     33 #error GDTOA_LD_FMT must be defined by format-specific source file
     34 #endif
     35 
     36 #define STRTOP(x) __CONCAT(strtop, x)
     37 
     38 long double
     39 strtold(const char *nptr, char **endptr)
     40 {
     41   long double ld;
     42 
     43   (void)STRTOP(GDTOA_LD_FMT)(nptr, endptr, &ld);
     44   return ld;
     45 }
     46