From b4e3f2f94a505c800e895764e429ec9ec310d9b4 Mon Sep 17 00:00:00 2001 From: mike Date: Sat, 8 Feb 2003 20:37:55 +0000 Subject: Implement fpclassify(): o Add a MD header private to libc called _fpmath.h; this header contains bitfield layouts of MD floating-point types. o Add a MI header private to libc called fpmath.h; this header contains bitfield layouts of MI floating-point types. o Add private libc variables to lib/libc/$arch/gen/infinity.c for storing NaN values. o Add __double_t and __float_t to , and provide double_t and float_t typedefs in . o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF, HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to and others (FLT_EVAL_METHOD, DECIMAL_DIG) to via . o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based on the size of its argument. __fpclassifyl() is never called on alpha because (sizeof(long double) == sizeof(double)), which is good since __fpclassifyl() can't deal with such a small `long double'. This was developed by David Schultz and myself with input from bde and fenner. PR: 23103 Submitted by: David Schultz (significant portions) Reviewed by: bde, fenner (earlier versions) --- sys/alpha/include/_types.h | 2 ++ sys/alpha/include/float.h | 2 ++ 2 files changed, 4 insertions(+) (limited to 'sys/alpha') diff --git a/sys/alpha/include/_types.h b/sys/alpha/include/_types.h index 731306d..01ec08e 100644 --- a/sys/alpha/include/_types.h +++ b/sys/alpha/include/_types.h @@ -56,6 +56,8 @@ typedef unsigned long __uint64_t; */ typedef __int32_t __clock_t; /* clock()... */ typedef __int64_t __critical_t; +typedef double __double_t; +typedef float __float_t; typedef __int64_t __intfptr_t; typedef __int64_t __intmax_t; typedef __int64_t __intptr_t; diff --git a/sys/alpha/include/float.h b/sys/alpha/include/float.h index 4d72b0e..9cb5f9a 100644 --- a/sys/alpha/include/float.h +++ b/sys/alpha/include/float.h @@ -45,6 +45,8 @@ __END_DECLS #define FLT_RADIX 2 /* b */ #define FLT_ROUNDS __flt_rounds() +#define FLT_EVAL_METHOD 0 /* no promotions */ +#define DECIMAL_DIG 17 /* max precision in decimal digits */ #define FLT_MANT_DIG 24 /* p */ #define FLT_EPSILON 1.19209290E-07F /* b**(1-p) */ -- cgit v1.1