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Diffstat (limited to 'man3/ldexp.3')
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diff --git a/man3/ldexp.3 b/man3/ldexp.3 deleted file mode 100644 index 926aa47..0000000 --- a/man3/ldexp.3 +++ /dev/null @@ -1,131 +0,0 @@ -'\" t -.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) -.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk -.\" <mtk.manpages@gmail.com> -.\" -.\" 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 2004-10-31 by aeb -.\" -.TH ldexp 3 2023-10-31 "Linux man-pages 6.7" -.SH NAME -ldexp, ldexpf, ldexpl \- multiply floating-point number by integral power of 2 -.SH LIBRARY -Math library -.RI ( libm ", " \-lm ) -.SH SYNOPSIS -.nf -.B #include <math.h> -.P -.BI "double ldexp(double " x ", int " exp ); -.BI "float ldexpf(float " x ", int " exp ); -.BI "long double ldexpl(long double " x ", int " exp ); -.fi -.P -.RS -4 -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.RE -.P -.BR ldexpf (), -.BR ldexpl (): -.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 return the result of multiplying the floating-point number -.I x -by 2 raised to the power -.IR exp . -.SH RETURN VALUE -On success, these functions return -.IR "x * (2\[ha]exp)" . -.P -If -.I exp -is zero, then -.I x -is returned. -.P -If -.I x -is a NaN, -a NaN is returned. -.P -If -.I x -is positive infinity (negative infinity), -positive infinity (negative infinity) is returned. -.P -If the result underflows, -a range error occurs, -and zero is returned. -.P -If the result overflows, -a range error occurs, -and the functions return -.BR HUGE_VAL , -.BR HUGE_VALF , -or -.BR HUGE_VALL , -respectively, with a sign the same as -.IR x . -.SH ERRORS -See -.BR math_error (7) -for information on how to determine whether an error has occurred -when calling these functions. -.P -The following errors can occur: -.TP -Range error, overflow -.I errno -is set to -.BR ERANGE . -An overflow floating-point exception -.RB ( FE_OVERFLOW ) -is raised. -.TP -Range error, underflow -.I errno -is set to -.BR ERANGE . -An underflow floating-point exception -.RB ( FE_UNDERFLOW ) -is raised. -.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 ldexp (), -.BR ldexpf (), -.BR ldexpl () -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 SEE ALSO -.BR frexp (3), -.BR modf (3), -.BR scalbln (3) |