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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=165746
@ -35,13 +35,8 @@ THIS SOFTWARE.
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double-precision arithmetic (any of IEEE, VAX D_floating,
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or IBM mainframe arithmetic).
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Please send bug reports to
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David M. Gay
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Bell Laboratories, Room 2C-463
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600 Mountain Avenue
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Murray Hill, NJ 07974-0636
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U.S.A.
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dmg@bell-labs.com
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Please send bug reports to David M. Gay (dmg at acm dot org,
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with " at " changed at "@" and " dot " changed to ".").
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*/
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/* On a machine with IEEE extended-precision registers, it is
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@ -63,7 +58,7 @@ THIS SOFTWARE.
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* biased rounding (add half and chop).
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*
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* Inspired loosely by William D. Clinger's paper "How to Read Floating
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* Point Numbers Accurately" [Proc. ACM SIGPLAN '90, pp. 92-101].
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* Point Numbers Accurately" [Proc. ACM SIGPLAN '90, pp. 112-126].
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*
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* Modifications:
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*
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@ -134,10 +129,7 @@ THIS SOFTWARE.
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* 8-byte pointers, PRIVATE_MEM >= 7400 appears to suffice; with
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* 4-byte pointers, PRIVATE_MEM >= 7112 appears adequate.
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* #define INFNAN_CHECK on IEEE systems to cause strtod to check for
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* Infinity and NaN (case insensitively). On some systems (e.g.,
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* some HP systems), it may be necessary to #define NAN_WORD0
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* appropriately -- to the most significant word of a quiet NaN.
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* (On HP Series 700/800 machines, -DNAN_WORD0=0x7ff40000 works.)
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* Infinity and NaN (case insensitively).
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* When INFNAN_CHECK is #defined and No_Hex_NaN is not #defined,
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* strtodg also accepts (case insensitively) strings of the form
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* NaN(x), where x is a string of hexadecimal digits and spaces;
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@ -178,6 +170,7 @@ THIS SOFTWARE.
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#ifndef GDTOAIMP_H_INCLUDED
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#define GDTOAIMP_H_INCLUDED
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#include "gdtoa.h"
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#include "gd_qnan.h"
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#ifdef DEBUG
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#include "stdio.h"
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@ -558,6 +551,7 @@ extern void memcpy_D2A ANSI((void*, const void*, size_t));
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#define hexdig_init_D2A __hexdig_init_D2A
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#define hexnan __hexnan_D2A
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#define hi0bits __hi0bits_D2A
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#define hi0bits_D2A __hi0bits_D2A
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#define i2b __i2b_D2A
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#define increment __increment_D2A
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#define lo0bits __lo0bits_D2A
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@ -657,31 +651,39 @@ extern void memcpy_D2A ANSI((void*, const void*, size_t));
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#ifdef __cplusplus
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}
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#endif
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/*
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* NAN_WORD0 and NAN_WORD1 are only referenced in strtod.c. Prior to
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* 20050115, they used to be hard-wired here (to 0x7ff80000 and 0,
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* respectively), but now are determined by compiling and running
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* qnan.c to generate gd_qnan.h, which specifies d_QNAN0 and d_QNAN1.
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* Formerly gdtoaimp.h recommended supplying suitable -DNAN_WORD0=...
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* and -DNAN_WORD1=... values if necessary. This should still work.
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* (On HP Series 700/800 machines, -DNAN_WORD0=0x7ff40000 works.)
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*/
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#ifdef IEEE_Arith
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#ifdef IEEE_MC68k
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#define _0 0
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#define _1 1
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#ifndef NAN_WORD0
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#define NAN_WORD0 d_QNAN0
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#endif
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#ifndef NAN_WORD1
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#define NAN_WORD1 d_QNAN1
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#endif
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#else
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#define _0 1
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#define _1 0
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#ifndef NAN_WORD0
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#define NAN_WORD0 d_QNAN1
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#endif
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#ifndef NAN_WORD1
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#define NAN_WORD1 d_QNAN0
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#endif
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#endif
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#else
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#undef INFNAN_CHECK
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#endif
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#ifdef INFNAN_CHECK
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#ifndef NAN_WORD0
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#define NAN_WORD0 0x7ff80000
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#endif
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#ifndef NAN_WORD1
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#define NAN_WORD1 0
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#endif
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#endif /* INFNAN_CHECK */
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#undef SI
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#ifdef Sudden_Underflow
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#define SI 1
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