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author | Ulrich Drepper <drepper@redhat.com> | 1997-04-30 15:51:34 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1997-04-30 15:51:34 +0000 |
commit | 779ae82ecdf88b7ed7c1f00d3ed3a639671c3c8d (patch) | |
tree | 287afe5ef732d76109129a142c5840cc42a2b34a /manual/arith.texi | |
parent | a12ea214dbc999b98ab5ed4e53fb0089cf5e183a (diff) | |
download | glibc-779ae82ecdf88b7ed7c1f00d3ed3a639671c3c8d.tar.gz glibc-779ae82ecdf88b7ed7c1f00d3ed3a639671c3c8d.tar.xz glibc-779ae82ecdf88b7ed7c1f00d3ed3a639671c3c8d.zip |
Update. cvs/libc-ud-970430 cvs/libc-970619 cvs/libc-970618 cvs/libc-970617 cvs/libc-970616 cvs/libc-970615 cvs/libc-970614 cvs/libc-970613 cvs/libc-970612 cvs/libc-970611 cvs/libc-970610 cvs/libc-970609 cvs/libc-970608 cvs/libc-970607 cvs/libc-970606 cvs/libc-970605 cvs/libc-970604 cvs/libc-970603 cvs/libc-970602 cvs/libc-970601 cvs/libc-970531 cvs/libc-970530 cvs/libc-970529 cvs/libc-970528 cvs/libc-970527 cvs/libc-970526 cvs/libc-970525 cvs/libc-970524 cvs/libc-970523 cvs/libc-970522 cvs/libc-970521 cvs/libc-970520 cvs/libc-970519 cvs/libc-970518 cvs/libc-970517 cvs/libc-970516 cvs/libc-970515 cvs/libc-970514 cvs/libc-970513 cvs/libc-970512 cvs/libc-970511 cvs/libc-970510 cvs/libc-970509 cvs/libc-970508 cvs/libc-970507 cvs/libc-970506 cvs/libc-970505 cvs/libc-970504 cvs/libc-970503 cvs/libc-970502 cvs/libc-970501
1997-04-30 17:35 Ulrich Drepper <drepper@cygnus.com> * math/libm-test.c: Implement test for exceptions. Partly due to Andreas Jaeger. (csin_test): New function. * sysdeps/libm-i387/s_cexp.S: Raise correct exceptions. * sysdeps/libm-i387/s_cexpf.S: Likewise. * sysdeps/libm-i387/s_cexpl.S: Likewise. * sysdeps/libm-ieee754/s_ccos.c: Likewise. * sysdeps/libm-ieee754/s_ccosf.c: Likewise. * sysdeps/libm-ieee754/s_ccosl.c: Likewise. * sysdeps/libm-ieee754/s_ccosh.c: Likewise. * sysdeps/libm-ieee754/s_ccoshf.c: Likewise. * sysdeps/libm-ieee754/s_ccoshl.c: Likewise. * sysdeps/libm-ieee754/s_cexp.c: Likewise. * sysdeps/libm-ieee754/s_cexpf.c: Likewise. * sysdeps/libm-ieee754/s_cexpl.c: Likewise. * sysdeps/libm-ieee754/s_csinh.c: Likewise. * sysdeps/libm-ieee754/s_csinhf.c: Likewise. * sysdeps/libm-ieee754/s_csinhl.c: Likewise. * sysdeps/libm-ieee754/s_ctanh.c: Likewise. * sysdeps/libm-ieee754/s_ctanhf.c: Likewise. * sysdeps/libm-ieee754/s_ctanhl.c: Likewise. * sysdeps/libm-ieee754/s_ccosh.c: Correct computation. * sysdeps/libm-ieee754/s_ccoshf.c: Likewise. * sysdeps/libm-ieee754/s_ccoshl.c: Likewise. * sysdeps/libm-ieee754/s_csinh.c: Likewise. * sysdeps/libm-ieee754/s_csinhf.c: Likewise. * sysdeps/libm-ieee754/s_csinhl.c: Likewise. * sysdeps/libm-ieee754/s_csin.c: Rewrite. * sysdeps/libm-ieee754/s_csinf.c: Likewise. * sysdeps/libm-ieee754/s_csinl.c: Likewise. * stdlib/random_r.c (__srandom_r): Don't use seed 0. Use 1 in this case. * sysdeps/i386/dl-machine.h (elf_machine_load_address): Use notation for local label. * time/strftime.c (add): Respect `0' padding flag. Reported by Richard Stallman <rms@gnu.ai.mit.edu>. 1997-04-30 15:46 Ulrich Drepper <drepper@cygnus.com> * Makeconfig (start-installed-name): Define here, not in csu/Makefile. Use in +link macro. * csu/Makefile (distribute): Add abi-note.S and abi-tag.h. (start-installed-name): Don't define here. When ELF generate file named by start-installed-name from start.o and abi-note.o. * csu/abi-note.S: New file. * sysdeps/stub/abi-tag.h: New file. * sysdpes/unix/sysv/linux/abi-tag.h: New file. Patches by Roland McGrath <roland@gnu.ai.mit.edu>. 1997-04-30 01:32 Ulrich Drepper <drepper@cygnus.com> * manual/stdio.texi: Use @vtable where possible. Add TeX version of @multitable since texi2dvi cannot handle them correct in the moment. * po/de.po: Update. 1997-04-29 21:06 Ulrich Drepper <drepper@cygnus.com> * Makeconfig: Don't set cross-compiling based on $(BUILD_CC) != $(CC). * config.make.in: Set cross-compiling from configure result. * configure.in: Emit definition of `cross_compiling'. Patches by Marcus G. Daniels <marcus@cathcart.sysc.pdx.edu>. 1997-04-27 21:50 Philip Blundell <pjb27@cam.ac.uk> * sysdeps/unix/sysv/linux/net/route.h (struct in6_rtmsg): Use correct `int' sizes for struct members. 1997-04-29 19:14 Ulrich Drepper <drepper@cygnus.com> * sysdeps/libm-i387/e_powf.S Generate invalid exception correctly. * sysdeps/libm-i387/e_pow.S: Likewise. * sysdeps/libm-i387/e_powl.S: Likewise. 1997-04-23 10:08 Andreas Jaeger <aj@arthur.rhein-neckar.de> * math/fenv.h: Correct typos. 1997-04-28 10:04 Richard Henderson <rth@tamu.edu> * sysdeps/unix/sysv/linux/alpha/clone.S: Save the function argument in t0 rather than a4 to avoid it being clobbered. 1997-04-27 23:52 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/summary.awk: Recognize @defmumblex. * manual/signal.texi (Miscellaneous Signals): Use @deftypevrx for second description header. 1997-04-27 23:29 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/arith.texi (Floating-Point Classes): Don't indent text, makeinfo doesn't like that. 1997-04-27 20:52 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * malloc/obstack.h (obstack_specify_allocation_with_arg, obstack_chunkfun, obstack_freefun): Fix casts. 1997-04-27 18:21 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/xtract-typefun.awk: Allow names with only one character. 1997-04-26 14:16 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/netinet/ip_fw.h: Use <netinet/ip_icmp.h> not <netinet/icmp.h>. Reported by Michael Deutschmann <ldeutsch@mail.netshop.net>. 1997-04-25 12:31 Ulrich Drepper <drepper@cygnus.com> * csu/Makefile ($(objpfx)initfini.s): Add CPPFLAGS, CFLAGS and -g0 to command line of compiler. Patch by Marcus G. Daniels <marcus@sysc.pdx.edu>. * sysdeps/generic/sigset.h (__sigandset, __sigorset): Fix typos. Patch by Marcus G. Daniels <marcus@sysc.pdx.edu>. * signal/signal.h (_sys_siglist, sys_siglist): Use _NSIG, not NSIG in declaration. Patch by Michael Widenius <monty@tcx.se>. * time/strptime.c (strptime_internal): Fix %I format specifier being off by one. Patch by Mark Kettenis <kettenis@phys.uva.nl>. 1997-04-24 12:18 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * stdlib/lcong48_r.c: Include <limits.h>. * stdlib/seed48_r.c: Likewise. * stdio-common/printf_size.c (printf_size): Correct type of `units' and make robust against future changes. 1997-04-23 18:58 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/libm-ieee754/s_cproj.c: Use isfinite instead of finite. * sysdeps/libm-ieee754/s_cprojl.c: Likewise. * sysdeps/libm-ieee754/s_cprojf.c: Likewise. 1997-04-23 18:53 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/arith.texi, manual/math.texi: Use @defmumblex for additional description headers. * manual/xtract-typefun.awk: Recognize them. 1997-04-22 15:58 Andreas Jaeger <aj@arthur.rhein-neckar.de> * stdio-common/printf_size.c (printf_size): Correct size of array units.
Diffstat (limited to 'manual/arith.texi')
-rw-r--r-- | manual/arith.texi | 154 |
1 files changed, 55 insertions, 99 deletions
diff --git a/manual/arith.texi b/manual/arith.texi index 86fb2667a0..efe0489e40 100644 --- a/manual/arith.texi +++ b/manual/arith.texi @@ -149,10 +149,8 @@ functions, and thus are available if you define @code{_BSD_SOURCE} or @comment math.h @comment BSD @deftypefun int isinf (double @var{x}) -@end deftypefun -@deftypefun int isinff (float @var{x}) -@end deftypefun -@deftypefun int isinfl (long double @var{x}) +@deftypefunx int isinff (float @var{x}) +@deftypefunx int isinfl (long double @var{x}) This function returns @code{-1} if @var{x} represents negative infinity, @code{1} if @var{x} represents positive infinity, and @code{0} otherwise. @end deftypefun @@ -160,10 +158,8 @@ This function returns @code{-1} if @var{x} represents negative infinity, @comment math.h @comment BSD @deftypefun int isnan (double @var{x}) -@end deftypefun -@deftypefun int isnanf (float @var{x}) -@end deftypefun -@deftypefun int isnanl (long double @var{x}) +@deftypefunx int isnanf (float @var{x}) +@deftypefunx int isnanl (long double @var{x}) This function returns a nonzero value if @var{x} is a ``not a number'' value, and zero otherwise. (You can just as well use @code{@var{x} != @var{x}} to get the same result). @@ -172,10 +168,8 @@ value, and zero otherwise. (You can just as well use @code{@var{x} != @comment math.h @comment BSD @deftypefun int finite (double @var{x}) -@end deftypefun -@deftypefun int finitef (float @var{x}) -@end deftypefun -@deftypefun int finitel (long double @var{x}) +@deftypefunx int finitef (float @var{x}) +@deftypefunx int finitel (long double @var{x}) This function returns a nonzero value if @var{x} is finite or a ``not a number'' value, and zero otherwise. @end deftypefun @@ -213,21 +207,21 @@ which returns a value of type @code{int}. The possible values are: @vtable @code @item FP_NAN - The floating-point number @var{x} is ``Not a Number'' (@pxref{Not a Number}) +The floating-point number @var{x} is ``Not a Number'' (@pxref{Not a Number}) @item FP_INFINITE - The value of @var{x} is either plus or minus infinity (@pxref{Infinity}) +The value of @var{x} is either plus or minus infinity (@pxref{Infinity}) @item FP_ZERO - The value of @var{x} is zero. In floating-point formats like @w{IEEE - 754} where the zero value can be signed this value is also returned if - @var{x} is minus zero. +The value of @var{x} is zero. In floating-point formats like @w{IEEE +754} where the zero value can be signed this value is also returned if +@var{x} is minus zero. @item FP_SUBNORMAL - Some floating-point formats (such as @w{IEEE 754}) allow floating-point - numbers to be represented in a denormalized format. This happens if the - absolute value of the number is too small to be represented in the - normal format. @code{FP_SUBNORMAL} is returned for such values of @var{x}. +Some floating-point formats (such as @w{IEEE 754}) allow floating-point +numbers to be represented in a denormalized format. This happens if the +absolute value of the number is too small to be represented in the +normal format. @code{FP_SUBNORMAL} is returned for such values of @var{x}. @item FP_NORMAL - This value is returned for all other cases which means the number is a - plain floating-point number without special meaning. +This value is returned for all other cases which means the number is a +plain floating-point number without special meaning. @end vtable This macro is useful if more than property of a number must be @@ -319,20 +313,16 @@ functions. @comment complex.h @comment ISO @deftypefun double creal (complex double @var{z}) -@end deftypefun -@deftypefun float crealf (complex float @var{z}) -@end deftypefun -@deftypefun {long double} creall (complex long double @var{z}) +@deftypefunx float crealf (complex float @var{z}) +@deftypefunx {long double} creall (complex long double @var{z}) These functions return the real part of the complex number @var{z}. @end deftypefun @comment complex.h @comment ISO @deftypefun double cimag (complex double @var{z}) -@end deftypefun -@deftypefun float cimagf (complex float @var{z}) -@end deftypefun -@deftypefun {long double} cimagl (complex long double @var{z}) +@deftypefunx float cimagf (complex float @var{z}) +@deftypefunx {long double} cimagl (complex long double @var{z}) These functions return the imaginary part of the complex number @var{z}. @end deftypefun @@ -343,10 +333,8 @@ for the real part but the complex part is negated. @comment complex.h @comment ISO @deftypefun {complex double} conj (complex double @var{z}) -@end deftypefun -@deftypefun {complex float} conjf (complex float @var{z}) -@end deftypefun -@deftypefun {complex long double} conjl (complex long double @var{z}) +@deftypefunx {complex float} conjf (complex float @var{z}) +@deftypefunx {complex long double} conjl (complex long double @var{z}) These functions return the conjugate complex value of the complex number @var{z}. @end deftypefun @@ -354,10 +342,8 @@ These functions return the conjugate complex value of the complex number @comment complex.h @comment ISO @deftypefun double carg (complex double @var{z}) -@end deftypefun -@deftypefun float cargf (complex float @var{z}) -@end deftypefun -@deftypefun {long double} cargl (complex long double @var{z}) +@deftypefunx float cargf (complex float @var{z}) +@deftypefunx {long double} cargl (complex long double @var{z}) These functions return argument of the complex number @var{z}. Mathematically, the argument is the phase angle of @var{z} with a branch @@ -367,10 +353,8 @@ cut along the negative real axis. @comment complex.h @comment ISO @deftypefun {complex double} cproj (complex double @var{z}) -@end deftypefun -@deftypefun {complex float} cprojf (complex float @var{z}) -@end deftypefun -@deftypefun {complex long double} cprojl (complex long double @var{z}) +@deftypefunx {complex float} cprojf (complex float @var{z}) +@deftypefunx {complex long double} cprojl (complex long double @var{z}) Return the projection of the complex value @var{z} on the Riemann sphere. Values with a infinite complex part (even if the real part is NaN) are projected to positive infinte on the real axis. If the real part is infinite, the result is equivalent to @@ -418,10 +402,8 @@ are of type @code{long int} rather than @code{int}. @comment math.h @comment ISO @deftypefun double fabs (double @var{number}) -@end deftypefun -@deftypefun float fabsf (float @var{number}) -@end deftypefun -@deftypefun {long double} fabsl (long double @var{number}) +@deftypefunx float fabsf (float @var{number}) +@deftypefunx {long double} fabsl (long double @var{number}) This function returns the absolute value of the floating-point number @var{number}. @end deftypefun @@ -429,10 +411,8 @@ This function returns the absolute value of the floating-point number @comment complex.h @comment ISO @deftypefun double cabs (complex double @var{z}) -@end deftypefun -@deftypefun float cabsf (complex float @var{z}) -@end deftypefun -@deftypefun {long double} cabsl (complex long double @var{z}) +@deftypefunx float cabsf (complex float @var{z}) +@deftypefunx {long double} cabsl (complex long double @var{z}) These functions return the absolute value of the complex number @var{z}. The compiler must support complex numbers to use these functions. (See also the function @code{hypot} in @ref{Exponents and Logarithms}.) The @@ -461,10 +441,8 @@ All these functions are declared in @file{math.h}. @comment math.h @comment ISO @deftypefun double frexp (double @var{value}, int *@var{exponent}) -@end deftypefun -@deftypefun float frexpf (float @var{value}, int *@var{exponent}) -@end deftypefun -@deftypefun {long double} frexpl (long double @var{value}, int *@var{exponent}) +@deftypefunx float frexpf (float @var{value}, int *@var{exponent}) +@deftypefunx {long double} frexpl (long double @var{value}, int *@var{exponent}) These functions are used to split the number @var{value} into a normalized fraction and an exponent. @@ -484,10 +462,8 @@ zero is stored in @code{*@var{exponent}}. @comment math.h @comment ISO @deftypefun double ldexp (double @var{value}, int @var{exponent}) -@end deftypefun -@deftypefun float ldexpf (float @var{value}, int @var{exponent}) -@end deftypefun -@deftypefun {long double} ldexpl (long double @var{value}, int @var{exponent}) +@deftypefunx float ldexpf (float @var{value}, int @var{exponent}) +@deftypefunx {long double} ldexpl (long double @var{value}, int @var{exponent}) These functions return the result of multiplying the floating-point number @var{value} by 2 raised to the power @var{exponent}. (It can be used to reassemble floating-point numbers that were taken apart @@ -502,20 +478,16 @@ equivalent to those of @code{ldexp} and @code{frexp}: @comment math.h @comment BSD @deftypefun double scalb (double @var{value}, int @var{exponent}) -@end deftypefun -@deftypefun float scalbf (float @var{value}, int @var{exponent}) -@end deftypefun -@deftypefun {long double} scalbl (long double @var{value}, int @var{exponent}) +@deftypefunx float scalbf (float @var{value}, int @var{exponent}) +@deftypefunx {long double} scalbl (long double @var{value}, int @var{exponent}) The @code{scalb} function is the BSD name for @code{ldexp}. @end deftypefun @comment math.h @comment BSD @deftypefun double logb (double @var{x}) -@end deftypefun -@deftypefun float logbf (float @var{x}) -@end deftypefun -@deftypefun {long double} logbl (long double @var{x}) +@deftypefunx float logbf (float @var{x}) +@deftypefunx {long double} logbl (long double @var{x}) These BSD functions return the integer part of the base-2 logarithm of @var{x}, an integer value represented in type @code{double}. This is the highest integer power of @code{2} contained in @var{x}. The sign of @@ -536,10 +508,8 @@ The value returned by @code{logb} is one less than the value that @comment math.h @comment ISO @deftypefun double copysign (double @var{value}, double @var{sign}) -@end deftypefun -@deftypefun float copysignf (float @var{value}, float @var{sign}) -@end deftypefun -@deftypefun {long double} copysignl (long double @var{value}, long double @var{sign}) +@deftypefunx float copysignf (float @var{value}, float @var{sign}) +@deftypefunx {long double} copysignl (long double @var{value}, long double @var{sign}) These functions return a value whose absolute value is the same as that of @var{value}, and whose sign matches that of @var{sign}. This function appears in BSD and was standardized in @w{ISO C 9X}. @@ -580,10 +550,8 @@ result as a @code{double} instead to get around this problem. @comment math.h @comment ISO @deftypefun double ceil (double @var{x}) -@end deftypefun -@deftypefun float ceilf (float @var{x}) -@end deftypefun -@deftypefun {long double} ceill (long double @var{x}) +@deftypefunx float ceilf (float @var{x}) +@deftypefunx {long double} ceill (long double @var{x}) These functions round @var{x} upwards to the nearest integer, returning that value as a @code{double}. Thus, @code{ceil (1.5)} is @code{2.0}. @@ -592,10 +560,8 @@ is @code{2.0}. @comment math.h @comment ISO @deftypefun double floor (double @var{x}) -@end deftypefun -@deftypefun float floorf (float @var{x}) -@end deftypefun -@deftypefun {long double} floorl (long double @var{x}) +@deftypefunx float floorf (float @var{x}) +@deftypefunx {long double} floorl (long double @var{x}) These functions round @var{x} downwards to the nearest integer, returning that value as a @code{double}. Thus, @code{floor (1.5)} is @code{1.0} and @code{floor (-1.5)} is @code{-2.0}. @@ -604,10 +570,8 @@ integer, returning that value as a @code{double}. Thus, @code{floor @comment math.h @comment ISO @deftypefun double rint (double @var{x}) -@end deftypefun -@deftypefun float rintf (float @var{x}) -@end deftypefun -@deftypefun {long double} rintl (long double @var{x}) +@deftypefunx float rintf (float @var{x}) +@deftypefunx {long double} rintl (long double @var{x}) These functions round @var{x} to an integer value according to the current rounding mode. @xref{Floating Point Parameters}, for information about the various rounding modes. The default @@ -619,10 +583,8 @@ you explicit select another. @comment math.h @comment ISO @deftypefun double nearbyint (double @var{x}) -@end deftypefun -@deftypefun float nearbyintf (float @var{x}) -@end deftypefun -@deftypefun {long double} nearbyintl (long double @var{x}) +@deftypefunx float nearbyintf (float @var{x}) +@deftypefunx {long double} nearbyintl (long double @var{x}) These functions return the same value as the @code{rint} functions but even some rounding actually takes place @code{nearbyint} does @emph{not} raise the inexact exception. @@ -631,10 +593,8 @@ raise the inexact exception. @comment math.h @comment ISO @deftypefun double modf (double @var{value}, double *@var{integer-part}) -@end deftypefun -@deftypefun float modff (flaot @var{value}, float *@var{integer-part}) -@end deftypefun -@deftypefun {long double} modfl (long double @var{value}, long double *@var{integer-part}) +@deftypefunx float modff (flaot @var{value}, float *@var{integer-part}) +@deftypefunx {long double} modfl (long double @var{value}, long double *@var{integer-part}) These functions break the argument @var{value} into an integer part and a fractional part (between @code{-1} and @code{1}, exclusive). Their sum equals @var{value}. Each of the parts has the same sign as @var{value}, @@ -648,10 +608,8 @@ returns @code{0.5} and stores @code{2.0} into @code{intpart}. @comment math.h @comment ISO @deftypefun double fmod (double @var{numerator}, double @var{denominator}) -@end deftypefun -@deftypefun float fmodf (float @var{numerator}, float @var{denominator}) -@end deftypefun -@deftypefun {long double} fmodl (long double @var{numerator}, long double @var{denominator}) +@deftypefunx float fmodf (float @var{numerator}, float @var{denominator}) +@deftypefunx {long double} fmodl (long double @var{numerator}, long double @var{denominator}) These functions compute the remainder from the division of @var{numerator} by @var{denominator}. Specifically, the return value is @code{@var{numerator} - @w{@var{n} * @var{denominator}}}, where @var{n} @@ -669,10 +627,8 @@ If @var{denominator} is zero, @code{fmod} fails and sets @code{errno} to @comment math.h @comment BSD @deftypefun double drem (double @var{numerator}, double @var{denominator}) -@end deftypefun -@deftypefun float dremf (float @var{numerator}, float @var{denominator}) -@end deftypefun -@deftypefun {long double} dreml (long double @var{numerator}, long double @var{denominator}) +@deftypefunx float dremf (float @var{numerator}, float @var{denominator}) +@deftypefunx {long double} dreml (long double @var{numerator}, long double @var{denominator}) These functions are like @code{fmod} etc except that it rounds the internal quotient @var{n} to the nearest integer instead of towards zero to an integer. For example, @code{drem (6.5, 2.3)} returns @code{-0.4}, |