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Diffstat (limited to 'man/man3type/double_t.3type')
-rw-r--r-- | man/man3type/double_t.3type | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/man/man3type/double_t.3type b/man/man3type/double_t.3type new file mode 100644 index 0000000..d23cb61 --- /dev/null +++ b/man/man3type/double_t.3type @@ -0,0 +1,56 @@ +'\" t +.\" Copyright (c) 2020-2022 by Alejandro Colomar <alx@kernel.org> +.\" and Copyright (c) 2020 by Michael Kerrisk <mtk.manpages@gmail.com> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" +.TH double_t 3type 2024-05-02 "Linux man-pages (unreleased)" +.SH NAME +float_t, double_t \- most efficient floating types +.SH LIBRARY +Math library +.RI ( libm ) +.SH SYNOPSIS +.nf +.B #include <math.h> +.P +.BR typedef " /* ... */ " float_t; +.BR typedef " /* ... */ " double_t; +.fi +.SH DESCRIPTION +The implementation's most efficient floating types at least as wide as +.I float +and +.I double +respectively. +Their type depends on the value of the macro +.B FLT_EVAL_METHOD +(defined in +.IR <float.h> ): +.P +.TS +lB rI rI. +FLT_EVAL_METHOD float_t double_t +.T& +n rI rI. +_ +0 float double +1 double double +2 long double long double +.TE +.P +For other values of +.BR FLT_EVAL_METHOD , +the types of +.I float_t +and +.I double_t +are implementation-defined. +.SH STANDARDS +C11, POSIX.1-2008. +.SH HISTORY +C99, POSIX.1-2001. +.SH SEE ALSO +.BR float.h (0p), +.BR math.h (0p) |