//usr/include/bits
178 items
NAME ↑ SIZE MODIFIED PERMS ACTIONS
.. / Parent Directory
platform — dir
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— 2026-08-12 11:46 rwxr-xr-x
types — dir
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a.out.h — 268 B
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argp-ldbl.h — 1010 B
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atomic_wide_counter.h — 1.25 KB
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byteswap.h — 2.39 KB
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cmathcalls.h — 4.04 KB
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confname.h — 23.27 KB
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cpu-set.h — 4.41 KB
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dirent.h — 1.73 KB
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dirent_ext.h — 1.25 KB
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dl_find_object.h — 1.09 KB
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dlfcn.h — 2.46 KB
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elfclass.h — 426 B
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endian.h — 1.86 KB
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endianness.h — 273 B
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environments.h — 3.7 KB
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epoll.h — 1.05 KB
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err-ldbl.h — 1.12 KB
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errno.h — 1.39 KB
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error-ldbl.h — 1012 B
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error.h — 2.62 KB
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eventfd.h — 1.1 KB
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fcntl-linux.h — 13.72 KB
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fcntl.h — 2.19 KB
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fcntl2.h — 5.44 KB
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fenv.h — 3.29 KB
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floatn-common.h — 10.08 KB
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floatn.h — 4.35 KB
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flt-eval-method.h — 1.19 KB
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fp-fast.h — 1.19 KB
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fp-logb.h — 1012 B
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getopt_core.h — 3.58 KB
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getopt_ext.h — 2.97 KB
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getopt_posix.h — 1.77 KB
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hwcap.h — 972 B
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in.h — 9.37 KB
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indirect-return.h — 1.55 KB
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inet-fortified-decl.h — 1.8 KB
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inet-fortified.h — 1.75 KB
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initspin.h — 25 B
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inotify.h — 1.05 KB
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ioctl-types.h — 2.4 KB
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ioctls.h — 4.37 KB
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ipc-perm.h — 1.7 KB
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ipc.h — 1.49 KB
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ipctypes.h — 1.15 KB
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iscanonical.h — 2.42 KB
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libc-header-start.h — 4.19 KB
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libm-simd-decl-stubs.h — 2.93 KB
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link.h — 4.19 KB
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link_lavcurrent.h — 1.07 KB
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local_lim.h — 3.1 KB
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locale.h — 1.34 KB
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long-double.h — 970 B
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math-vector.h — 2.25 KB
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mathcalls-helper-functions.h — 1.82 KB
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mathcalls-narrow.h — 1.28 KB
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mathcalls.h — 13.07 KB
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mathdef.h — 891 B
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mman-linux.h — 4.97 KB
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mman-map-flags-generic.h — 1.95 KB
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mman-shared.h — 2.77 KB
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mman.h — 1.33 KB
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monetary-ldbl.h — 1.02 KB
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mqueue.h — 1.22 KB
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mqueue2.h — 2.1 KB
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msq.h — 1.75 KB
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netdb.h — 1.23 KB
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param.h — 1.4 KB
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poll.h — 2.03 KB
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poll2.h — 2.6 KB
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posix1_lim.h — 5.08 KB
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posix2_lim.h — 2.8 KB
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posix_opt.h — 5.77 KB
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printf-ldbl.h — 992 B
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procfs-extra.h — 963 B
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procfs-id.h — 1.12 KB
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procfs-prregset.h — 1.03 KB
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procfs.h — 1.98 KB
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pthread_stack_min-dynamic.h — 1.18 KB
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pthread_stack_min.h — 946 B
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pthreadtypes-arch.h — 1.79 KB
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pthreadtypes.h — 3 KB
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ptrace-shared.h — 4 KB
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resource.h — 6.16 KB
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rseq.h — 1.21 KB
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sched.h — 5.54 KB
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select.h — 1.47 KB
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select2.h — 1.4 KB
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sem.h — 2.21 KB
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semaphore.h — 1.19 KB
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setjmp.h — 1.26 KB
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setjmp2.h — 1.67 KB
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shm.h — 2.7 KB
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shmlba.h — 1.08 KB
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sigaction.h — 2.87 KB
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sigcontext.h — 4.17 KB
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sigevent-consts.h — 1.44 KB
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siginfo-arch.h — 729 B
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siginfo-consts-arch.h — 204 B
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siginfo-consts.h — 6.87 KB
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signal_ext.h — 1.25 KB
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signalfd.h — 1.04 KB
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signum-arch.h — 2.52 KB
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signum-generic.h — 3.24 KB
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sigstack.h — 1.14 KB
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sigstksz.h — 1.25 KB
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sigthread.h — 1.65 KB
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sockaddr.h — 1.48 KB
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socket-constants.h — 2.44 KB
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socket.h — 13.24 KB
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socket2.h — 2.99 KB
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ss_flags.h — 1.16 KB
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stab.def — 8.83 KB
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stat.h — 2.18 KB
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statfs.h — 1.87 KB
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statvfs.h — 3.34 KB
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statx-generic.h — 2.14 KB
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stdint-intn.h — 1.01 KB
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stdio-ldbl.h — 3.4 KB
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stdio2-decl.h — 4.14 KB
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stdio2.h — 9.86 KB
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stdio_lim.h — 1.18 KB
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stdlib-bsearch.h — 1.52 KB
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stdlib-float.h — 1.09 KB
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stdlib-ldbl.h — 1.97 KB
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stdlib.h — 5.65 KB
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string_fortified.h — 4.24 KB
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strings_fortified.h — 1.21 KB
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struct_mutex.h — 1.77 KB
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struct_rwlock.h — 1.98 KB
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struct_stat.h — 6.04 KB
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struct_stat_time64_helper.h — 2.54 KB
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syscall.h — 45.43 KB
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syslog-ldbl.h — 1.18 KB
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sysmacros.h — 2.88 KB
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termios-baud.h — 1.78 KB
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termios-c_iflag.h — 1.89 KB
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termios-c_oflag.h — 2.76 KB
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termios-misc.h — 969 B
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termios-struct.h — 1.4 KB
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termios-tcflow.h — 1.04 KB
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termios.h — 2.12 KB
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xopen_lim.h — 3.77 KB
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/* Prototype declarations for math functions; helper file for . Copyright (C) 1996-2021 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see . */ /* NOTE: Because of the special way this file is used by , this file must NOT be protected from multiple inclusion as header files usually are. This file provides prototype declarations for the math functions. Most functions are declared using the macro: __MATHCALL (NAME,[_r], (ARGS...)); This means there is a function `NAME' returning `double' and a function `NAMEf' returning `float'. Each place `_Mdouble_' appears in the prototype, that is actually `double' in the prototype for `NAME' and `float' in the prototype for `NAMEf'. Reentrant variant functions are called `NAME_r' and `NAMEf_r'. Functions returning other types like `int' are declared using the macro: __MATHDECL (TYPE, NAME,[_r], (ARGS...)); This is just like __MATHCALL but for a function returning `TYPE' instead of `_Mdouble_'. In all of these cases, there is still both a `NAME' and a `NAMEf' that takes `float' arguments. Note that there must be no whitespace before the argument passed for NAME, to make token pasting work with -traditional. */ #ifndef _MATH_H # error "Never include directly; include instead." #endif /* Trigonometric functions. */ /* Arc cosine of X. */ __MATHCALL (acos,, (_Mdouble_ __x)); /* Arc sine of X. */ __MATHCALL (asin,, (_Mdouble_ __x)); /* Arc tangent of X. */ __MATHCALL (atan,, (_Mdouble_ __x)); /* Arc tangent of Y/X. */ __MATHCALL (atan2,, (_Mdouble_ __y, _Mdouble_ __x)); /* Cosine of X. */ __MATHCALL_VEC (cos,, (_Mdouble_ __x)); /* Sine of X. */ __MATHCALL_VEC (sin,, (_Mdouble_ __x)); /* Tangent of X. */ __MATHCALL (tan,, (_Mdouble_ __x)); /* Hyperbolic functions. */ /* Hyperbolic cosine of X. */ __MATHCALL (cosh,, (_Mdouble_ __x)); /* Hyperbolic sine of X. */ __MATHCALL (sinh,, (_Mdouble_ __x)); /* Hyperbolic tangent of X. */ __MATHCALL (tanh,, (_Mdouble_ __x)); #ifdef __USE_GNU /* Cosine and sine of X. */ __MATHDECL_VEC (void,sincos,, (_Mdouble_ __x, _Mdouble_ *__sinx, _Mdouble_ *__cosx)); #endif #if defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99 /* Hyperbolic arc cosine of X. */ __MATHCALL (acosh,, (_Mdouble_ __x)); /* Hyperbolic arc sine of X. */ __MATHCALL (asinh,, (_Mdouble_ __x)); /* Hyperbolic arc tangent of X. */ __MATHCALL (atanh,, (_Mdouble_ __x)); #endif /* Exponential and logarithmic functions. */ /* Exponential function of X. */ __MATHCALL_VEC (exp,, (_Mdouble_ __x)); /* Break VALUE into a normalized fraction and an integral power of 2. */ __MATHCALL (frexp,, (_Mdouble_ __x, int *__exponent)); /* X times (two to the EXP power). */ __MATHCALL (ldexp,, (_Mdouble_ __x, int __exponent)); /* Natural logarithm of X. */ __MATHCALL_VEC (log,, (_Mdouble_ __x)); /* Base-ten logarithm of X. */ __MATHCALL (log10,, (_Mdouble_ __x)); /* Break VALUE into integral and fractional parts. */ __MATHCALL (modf,, (_Mdouble_ __x, _Mdouble_ *__iptr)) __nonnull ((2)); #if __GLIBC_USE (IEC_60559_FUNCS_EXT_C2X) /* Compute exponent to base ten. */ __MATHCALL (exp10,, (_Mdouble_ __x)); #endif #if defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99 /* Return exp(X) - 1. */ __MATHCALL (expm1,, (_Mdouble_ __x)); /* Return log(1 + X). */ __MATHCALL (log1p,, (_Mdouble_ __x)); /* Return the base 2 signed integral exponent of X. */ __MATHCALL (logb,, (_Mdouble_ __x)); #endif #ifdef __USE_ISOC99 /* Compute base-2 exponential of X. */ __MATHCALL (exp2,, (_Mdouble_ __x)); /* Compute base-2 logarithm of X. */ __MATHCALL (log2,, (_Mdouble_ __x)); #endif /* Power functions. */ /* Return X to the Y power. */ __MATHCALL_VEC (pow,, (_Mdouble_ __x, _Mdouble_ __y)); /* Return the square root of X. */ __MATHCALL (sqrt,, (_Mdouble_ __x)); #if defined __USE_XOPEN || defined __USE_ISOC99 /* Return `sqrt(X*X + Y*Y)'. */ __MATHCALL (hypot,, (_Mdouble_ __x, _Mdouble_ __y)); #endif #if defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99 /* Return the cube root of X. */ __MATHCALL (cbrt,, (_Mdouble_ __x)); #endif /* Nearest integer, absolute value, and remainder functions. */ /* Smallest integral value not less than X. */ __MATHCALLX (ceil,, (_Mdouble_ __x), (__const__)); /* Absolute value of X. */ __MATHCALLX (fabs,, (_Mdouble_ __x), (__const__)); /* Largest integer not greater than X. */ __MATHCALLX (floor,, (_Mdouble_ __x), (__const__)); /* Floating-point modulo remainder of X/Y. */ __MATHCALL (fmod,, (_Mdouble_ __x, _Mdouble_ __y)); #ifdef __USE_MISC # if ((!defined __cplusplus \ || __cplusplus < 201103L /* isinf conflicts with C++11. */ \ || __MATH_DECLARING_DOUBLE == 0)) /* isinff or isinfl don't. */ \ && !__MATH_DECLARING_FLOATN /* Return 0 if VALUE is finite or NaN, +1 if it is +Infinity, -1 if it is -Infinity. */ __MATHDECL_ALIAS (int,isinf,, (_Mdouble_ __value), isinf) __attribute__ ((__const__)); # endif # if !__MATH_DECLARING_FLOATN /* Return nonzero if VALUE is finite and not NaN. */ __MATHDECL_ALIAS (int,finite,, (_Mdouble_ __value), finite) __attribute__ ((__const__)); /* Return the remainder of X/Y. */ __MATHCALL (drem,, (_Mdouble_ __x, _Mdouble_ __y)); /* Return the fractional part of X after dividing out `ilogb (X)'. */ __MATHCALL (significand,, (_Mdouble_ __x)); # endif #endif /* Use misc. */ #ifdef __USE_ISOC99 /* Return X with its signed changed to Y's. */ __MATHCALLX (copysign,, (_Mdouble_ __x, _Mdouble_ __y), (__const__)); #endif #ifdef __USE_ISOC99 /* Return representation of qNaN for double type. */ __MATHCALL (nan,, (const char *__tagb)); #endif #if defined __USE_MISC || (defined __USE_XOPEN && !defined __USE_XOPEN2K) # if ((!defined __cplusplus \ || __cplusplus < 201103L /* isnan conflicts with C++11. */ \ || __MATH_DECLARING_DOUBLE == 0)) /* isnanf or isnanl don't. */ \ && !__MATH_DECLARING_FLOATN /* Return nonzero if VALUE is not a number. */ __MATHDECL_ALIAS (int,isnan,, (_Mdouble_ __value), isnan) __attribute__ ((__const__)); # endif #endif #if defined __USE_MISC || (defined __USE_XOPEN && __MATH_DECLARING_DOUBLE) /* Bessel functions. */ __MATHCALL (j0,, (_Mdouble_)); __MATHCALL (j1,, (_Mdouble_)); __MATHCALL (jn,, (int, _Mdouble_)); __MATHCALL (y0,, (_Mdouble_)); __MATHCALL (y1,, (_Mdouble_)); __MATHCALL (yn,, (int, _Mdouble_)); #endif #if defined __USE_XOPEN || defined __USE_ISOC99 /* Error and gamma functions. */ __MATHCALL (erf,, (_Mdouble_)); __MATHCALL (erfc,, (_Mdouble_)); __MATHCALL (lgamma,, (_Mdouble_)); #endif #ifdef __USE_ISOC99 /* True gamma function. */ __MATHCALL (tgamma,, (_Mdouble_)); #endif #if defined __USE_MISC || (defined __USE_XOPEN && !defined __USE_XOPEN2K) # if !__MATH_DECLARING_FLOATN /* Obsolete alias for `lgamma'. */ __MATHCALL (gamma,, (_Mdouble_)); # endif #endif #ifdef __USE_MISC /* Reentrant version of lgamma. This function uses the global variable `signgam'. The reentrant version instead takes a pointer and stores the value through it. */ __MATHCALL (lgamma,_r, (_Mdouble_, int *__signgamp)); #endif #if defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99 /* Return the integer nearest X in the direction of the prevailing rounding mode. */ __MATHCALL (rint,, (_Mdouble_ __x)); /* Return X + epsilon if X < Y, X - epsilon if X > Y. */ __MATHCALL (nextafter,, (_Mdouble_ __x, _Mdouble_ __y)); # if defined __USE_ISOC99 && !defined __LDBL_COMPAT && !__MATH_DECLARING_FLOATN __MATHCALL (nexttoward,, (_Mdouble_ __x, long double __y)); # endif # if __GLIBC_USE (IEC_60559_BFP_EXT_C2X) || __MATH_DECLARING_FLOATN /* Return X - epsilon. */ __MATHCALL (nextdown,, (_Mdouble_ __x)); /* Return X + epsilon. */ __MATHCALL (nextup,, (_Mdouble_ __x)); # endif /* Return the remainder of integer divison X / Y with infinite precision. */ __MATHCALL (remainder,, (_Mdouble_ __x, _Mdouble_ __y)); # ifdef __USE_ISOC99 /* Return X times (2 to the Nth power). */ __MATHCALL (scalbn,, (_Mdouble_ __x, int __n)); # endif /* Return the binary exponent of X, which must be nonzero. */ __MATHDECL (int,ilogb,, (_Mdouble_ __x)); #endif #if __GLIBC_USE (IEC_60559_BFP_EXT_C2X) || __MATH_DECLARING_FLOATN /* Like ilogb, but returning long int. */ __MATHDECL (long int, llogb,, (_Mdouble_ __x)); #endif #ifdef __USE_ISOC99 /* Return X times (2 to the Nth power). */ __MATHCALL (scalbln,, (_Mdouble_ __x, long int __n)); /* Round X to integral value in floating-point format using current rounding direction, but do not raise inexact exception. */ __MATHCALL (nearbyint,, (_Mdouble_ __x)); /* Round X to nearest integral value, rounding halfway cases away from zero. */ __MATHCALLX (round,, (_Mdouble_ __x), (__const__)); /* Round X to the integral value in floating-point format nearest but not larger in magnitude. */ __MATHCALLX (trunc,, (_Mdouble_ __x), (__const__)); /* Compute remainder of X and Y and put in *QUO a value with sign of x/y and magnitude congruent `mod 2^n' to the magnitude of the integral quotient x/y, with n >= 3. */ __MATHCALL (remquo,, (_Mdouble_ __x, _Mdouble_ __y, int *__quo)); /* Conversion functions. */ /* Round X to nearest integral value according to current rounding direction. */ __MATHDECL (long int,lrint,, (_Mdouble_ __x)); __extension__ __MATHDECL (long long int,llrint,, (_Mdouble_ __x)); /* Round X to nearest integral value, rounding halfway cases away from zero. */ __MATHDECL (long int,lround,, (_Mdouble_ __x)); __extension__ __MATHDECL (long long int,llround,, (_Mdouble_ __x)); /* Return positive difference between X and Y. */ __MATHCALL (fdim,, (_Mdouble_ __x, _Mdouble_ __y)); /* Return maximum numeric value from X and Y. */ __MATHCALLX (fmax,, (_Mdouble_ __x, _Mdouble_ __y), (__const__)); /* Return minimum numeric value from X and Y. */ __MATHCALLX (fmin,, (_Mdouble_ __x, _Mdouble_ __y), (__const__)); /* Multiply-add function computed as a ternary operation. */ __MATHCALL (fma,, (_Mdouble_ __x, _Mdouble_ __y, _Mdouble_ __z)); #endif /* Use ISO C99. */ #if __GLIBC_USE (IEC_60559_BFP_EXT_C2X) || __MATH_DECLARING_FLOATN /* Round X to nearest integer value, rounding halfway cases to even. */ __MATHCALLX (roundeven,, (_Mdouble_ __x), (__const__)); /* Round X to nearest signed integer value, not raising inexact, with control of rounding direction and width of result. */ __MATHDECL (__intmax_t, fromfp,, (_Mdouble_ __x, int __round, unsigned int __width)); /* Round X to nearest unsigned integer value, not raising inexact, with control of rounding direction and width of result. */ __MATHDECL (__uintmax_t, ufromfp,, (_Mdouble_ __x, int __round, unsigned int __width)); /* Round X to nearest signed integer value, raising inexact for non-integers, with control of rounding direction and width of result. */ __MATHDECL (__intmax_t, fromfpx,, (_Mdouble_ __x, int __round, unsigned int __width)); /* Round X to nearest unsigned integer value, raising inexact for non-integers, with control of rounding direction and width of result. */ __MATHDECL (__uintmax_t, ufromfpx,, (_Mdouble_ __x, int __round, unsigned int __width)); /* Canonicalize floating-point representation. */ __MATHDECL_1 (int, canonicalize,, (_Mdouble_ *__cx, const _Mdouble_ *__x)); #endif #if (__GLIBC_USE (IEC_60559_BFP_EXT) \ || (__MATH_DECLARING_FLOATN \ && (defined __USE_GNU || !__GLIBC_USE (ISOC2X)))) /* Return value with maximum magnitude. */ __MATHCALLX (fmaxmag,, (_Mdouble_ __x, _Mdouble_ __y), (__const__)); /* Return value with minimum magnitude. */ __MATHCALLX (fminmag,, (_Mdouble_ __x, _Mdouble_ __y), (__const__)); #endif #if __GLIBC_USE (IEC_60559_EXT) || __MATH_DECLARING_FLOATN /* Total order operation. */ __MATHDECL_1 (int, totalorder,, (const _Mdouble_ *__x, const _Mdouble_ *__y)) __attribute_pure__; /* Total order operation on absolute values. */ __MATHDECL_1 (int, totalordermag,, (const _Mdouble_ *__x, const _Mdouble_ *__y)) __attribute_pure__; /* Get NaN payload. */ __MATHCALL (getpayload,, (const _Mdouble_ *__x)); /* Set quiet NaN payload. */ __MATHDECL_1 (int, setpayload,, (_Mdouble_ *__x, _Mdouble_ __payload)); /* Set signaling NaN payload. */ __MATHDECL_1 (int, setpayloadsig,, (_Mdouble_ *__x, _Mdouble_ __payload)); #endif #if (defined __USE_MISC || (defined __USE_XOPEN_EXTENDED \ && __MATH_DECLARING_DOUBLE \ && !defined __USE_XOPEN2K8)) \ && !__MATH_DECLARING_FLOATN /* Return X times (2 to the Nth power). */ __MATHCALL (scalb,, (_Mdouble_ __x, _Mdouble_ __n)); #endif