diff options
Diffstat (limited to 'man3/matherr.3')
| -rw-r--r-- | man3/matherr.3 | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/man3/matherr.3 b/man3/matherr.3 index 1a2805cce..8e9a9738d 100644 --- a/man3/matherr.3 +++ b/man3/matherr.3 @@ -4,7 +4,7 @@ .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" -.TH matherr 3 2023-02-05 "Linux man-pages 6.03" +.TH matherr 3 2023-07-20 "Linux man-pages 6.05.01" .SH NAME matherr \- SVID math library exception handling .SH LIBRARY @@ -259,19 +259,17 @@ remainder(x,0) DOMAIN NAN y EDOM \" retval is 0.0/0.0 .SH ATTRIBUTES For an explanation of the terms used in this section, see .BR attributes (7). -.ad l -.nh .TS allbox; lbx lb lb l l l. Interface Attribute Value T{ +.na +.nh .BR matherr () T} Thread safety MT-Safe .TE -.hy -.ad .sp 1 .SH EXAMPLES The example program demonstrates the use of @@ -367,13 +365,13 @@ x=12345.000000 #include <math.h> #include <stdio.h> #include <stdlib.h> - +\& static int matherr_ret = 0; /* Value that matherr() should return */ static int change_retval = 0; /* Should matherr() change function\[aq]s return value? */ static double new_retval; /* New function return value */ - +\& int matherr(struct exception *exc) { @@ -388,38 +386,38 @@ matherr(struct exception *exc) fprintf(stderr, " args: %f, %f\en", exc\->arg1, exc\->arg2); fprintf(stderr, " retval: %f\en", exc\->retval); - +\& if (change_retval) exc\->retval = new_retval; - +\& return matherr_ret; } - +\& int main(int argc, char *argv[]) { double x; - +\& if (argc < 2) { fprintf(stderr, "Usage: %s <argval>" " [<matherr\-ret> [<new\-func\-retval>]]\en", argv[0]); exit(EXIT_FAILURE); } - +\& if (argc > 2) { _LIB_VERSION = _SVID_; matherr_ret = atoi(argv[2]); } - +\& if (argc > 3) { change_retval = 1; new_retval = atof(argv[3]); } - +\& x = log(atof(argv[1])); if (errno != 0) perror("errno"); - +\& printf("x=%f\en", x); exit(EXIT_SUCCESS); } |