src-test/lib/libc/gen/fpclassify.3, branch stable/6

- Move the functions presently described in in ieee(3) to their own

2005-01-27T05:46:17Z

manpages. They are not very related, so separating them makes it easier to add meaningful cross-references and extend some of the descriptions. - Move the part of math(3) that discusses IEEE 754 to the ieee(3) manpage.

Bump document date for recent changes.

2004-07-09T06:37:44Z

Prodded by: ru

Document these functions as being in libm, not libc. Some of them

2004-07-09T03:33:00Z

*are* in libc for historical reasons, but programmers should not rely on that fact. Also remove a BUGS section that is not relevant here.

Assorted mdoc(7) fixes.

2003-06-01T19:19:59Z

o Implement C99 classification macros isfinite(), isinf(), isnan(),

2003-02-12T20:03:41Z

isnormal(). The current isinf() and isnan() are perserved for binary compatibility with 5.0, but new programs will use the macros. o Implement C99 comparison macros isgreater(), isgreaterequal(), isless(), islessequal(), islessgreater(), isunordered(). Submitted by: David Schultz

Implement fpclassify():

2003-02-08T20:37:55Z

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)