projects / thirdparty / man-pages.git / blame
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|---|---|---|
| fea681da | 1 | .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) |
| da5e9c0c MK |
2 | .\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk |
| 3 | .\" <mtk.manpages@gmail.com> | |
| 2297bf0e | 4 | .\" |
| 38f20bb9 | 5 | .\" %%%LICENSE_START(GPL_NOVERSION_ONELINE) |
| fea681da | 6 | .\" Distributed under GPL |
| 38f20bb9 | 7 | .\" %%%LICENSE_END |
| 51f2944d | 8 | .\" |
| fea681da | 9 | .\" Based on glibc infopages |
| 51f2944d | 10 | .\" |
| c73595c2 | 11 | .TH NEXTAFTER 3 2015-04-19 "GNU" "Linux Programmer's Manual" |
| fea681da | 12 | .SH NAME |
| c13182ef | 13 | nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl \- |
| da5e9c0c | 14 | floating-point number manipulation |
| fea681da MK |
15 | .SH SYNOPSIS |
| 16 | .B #include <math.h> | |
| 17 | .sp | |
| 18 | .BI "double nextafter(double " x ", double " y ); | |
| 19 | .br | |
| 20 | .BI "float nextafterf(float " x ", float " y ); | |
| 21 | .br | |
| 22 | .BI "long double nextafterl(long double " x ", long double " y ); | |
| 23 | .sp | |
| 24 | .BI "double nexttoward(double " x ", long double " y ); | |
| 25 | .br | |
| 26 | .BI "float nexttowardf(float " x ", long double " y ); | |
| 27 | .br | |
| c13182ef | 28 | .BI "long double nexttowardl(long double " x ", long double " y ); |
| fea681da | 29 | .sp |
| 20c58d70 | 30 | Link with \fI\-lm\fP. |
| cc4615cc MK |
31 | .sp |
| 32 | .in -4n | |
| 33 | Feature Test Macro Requirements for glibc (see | |
| 34 | .BR feature_test_macros (7)): | |
| 35 | .in | |
| 36 | .sp | |
| 37 | .ad l | |
| da5e9c0c | 38 | .BR nextafter (): |
| 16bbcf49 | 39 | .RS 4 |
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40 | _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 500 || |
| 41 | _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED || | |
| 42 | _ISOC99_SOURCE || | |
| 43 | _POSIX_C_SOURCE\ >=\ 200112L; | |
| 16bbcf49 MK |
44 | .br |
| 45 | or | |
| cc4615cc | 46 | .I cc\ -std=c99 |
| 16bbcf49 | 47 | .RE |
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48 | .br |
| 49 | .BR nextafterf (), | |
| 50 | .BR nextafterl (): | |
| 16bbcf49 | 51 | .RS 4 |
| 8bfd73ba MK |
52 | _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE || |
| 53 | _POSIX_C_SOURCE\ >=\ 200112L; | |
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54 | .br |
| 55 | or | |
| da5e9c0c | 56 | .I cc\ -std=c99 |
| 16bbcf49 | 57 | .RE |
| da5e9c0c MK |
58 | .br |
| 59 | .BR nexttoward (), | |
| 60 | .BR nexttowardf (), | |
| 61 | .BR nexttowardl (): | |
| 16bbcf49 | 62 | .RS 4 |
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63 | _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE || |
| 64 | _POSIX_C_SOURCE\ >=\ 200112L; | |
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65 | .br |
| 66 | or | |
| da5e9c0c | 67 | .I cc\ -std=c99 |
| 16bbcf49 | 68 | .RE |
| cc4615cc | 69 | .ad b |
| fea681da | 70 | .SH DESCRIPTION |
| c13182ef | 71 | The |
| 0352da63 PH |
72 | .BR nextafter (), |
| 73 | .BR nextafterf (), | |
| 74 | and | |
| 75 | .BR nextafterl () | |
| da5e9c0c MK |
76 | functions return the next representable floating-point value following |
| 77 | .I x | |
| 78 | in the direction of | |
| 79 | .IR y . | |
| 80 | If | |
| 81 | .I y | |
| 82 | is less than | |
| 83 | .IR x , | |