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diff --git a/man3/frexp.3 b/man3/frexp.3 deleted file mode 100644 index 9a5ab0d..0000000 --- a/man3/frexp.3 +++ /dev/null @@ -1,141 +0,0 @@ -'\" t -.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) -.\" -.\" SPDX-License-Identifier: Linux-man-pages-copyleft -.\" -.\" References consulted: -.\" Linux libc source code -.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) -.\" 386BSD man pages -.\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu) -.\" Modified 2002-07-27 by Walter Harms -.\" (walter.harms@informatik.uni-oldenburg.de) -.\" -.TH frexp 3 2024-01-29 "Linux man-pages 6.7" -.SH NAME -frexp, frexpf, frexpl \- convert floating-point number to fractional -and integral components -.SH LIBRARY -Math library -.RI ( libm ", " \-lm ) -.SH SYNOPSIS -.nf -.B #include <math.h> -.P -.BI "double frexp(double " x ", int *" exp ); -.BI "float frexpf(float " x ", int *" exp ); -.BI "long double frexpl(long double " x ", int *" exp ); -.fi -.P -.RS -4 -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.RE -.P -.BR frexpf (), -.BR frexpl (): -.nf - _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L - || /* Since glibc 2.19: */ _DEFAULT_SOURCE - || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE -.fi -.SH DESCRIPTION -These functions are used to split the number -.I x -into a -normalized fraction and an exponent which is stored in -.IR exp . -.SH RETURN VALUE -These functions return the normalized fraction. -If the argument -.I x -is not zero, -the normalized fraction is -.I x -times a power of two, -and its absolute value is always in the range 1/2 (inclusive) to -1 (exclusive), that is, [0.5,1). -.P -If -.I x -is zero, then the normalized fraction is -zero and zero is stored in -.IR exp . -.P -If -.I x -is a NaN, -a NaN is returned, and the value of -.I *exp -is unspecified. -.P -If -.I x -is positive infinity (negative infinity), -positive infinity (negative infinity) is returned, and the value of -.I *exp -is unspecified. -.SH ERRORS -No errors occur. -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.na -.nh -.BR frexp (), -.BR frexpf (), -.BR frexpl () -T} Thread safety MT-Safe -.TE -.SH STANDARDS -C11, POSIX.1-2008. -.SH HISTORY -C99, POSIX.1-2001. -.P -The variant returning -.I double -also conforms to -SVr4, 4.3BSD, C89. -.SH EXAMPLES -The program below produces results such as the following: -.P -.in +4n -.EX -.RB "$" " ./a.out 2560" -frexp(2560, &e) = 0.625: 0.625 * 2\[ha]12 = 2560 -.RB "$" " ./a.out \-4" -frexp(\-4, &e) = \-0.5: \-0.5 * 2\[ha]3 = \-4 -.EE -.in -.SS Program source -\& -.\" SRC BEGIN (frexp.c) -.EX -#include <float.h> -#include <math.h> -#include <stdio.h> -#include <stdlib.h> -\& -int -main(int argc, char *argv[]) -{ - double x, r; - int exp; -\& - x = strtod(argv[1], NULL); - r = frexp(x, &exp); -\& - printf("frexp(%g, &e) = %g: %g * %d\[ha]%d = %g\en", x, r, r, 2, exp, x); - exit(EXIT_SUCCESS); -} -.EE -.\" SRC END -.SH SEE ALSO -.BR ldexp (3), -.BR modf (3) |