diff options
Diffstat (limited to 'man3/log.3')
| -rw-r--r-- | man3/log.3 | 23 |
1 files changed, 11 insertions, 12 deletions
@@ -14,7 +14,7 @@ .\" Modified 2002-07-27 by Walter Harms .\" (walter.harms@informatik.uni-oldenburg.de) .\" -.TH log 3 2023-07-20 "Linux man-pages 6.05.01" +.TH log 3 2023-10-31 "Linux man-pages 6.7" .SH NAME log, logf, logl \- natural logarithmic function .SH LIBRARY @@ -23,17 +23,17 @@ Math library .SH SYNOPSIS .nf .B #include <math.h> -.PP +.P .BI "double log(double " x ); .BI "float logf(float " x ); .BI "long double logl(long double " x ); .fi -.PP +.P .RS -4 Feature Test Macro Requirements for glibc (see .BR feature_test_macros (7)): .RE -.PP +.P .BR logf (), .BR logl (): .nf @@ -47,21 +47,21 @@ These functions return the natural logarithm of .SH RETURN VALUE On success, these functions return the natural logarithm of .IR x . -.PP +.P If .I x is a NaN, a NaN is returned. -.PP +.P If .I x is 1, the result is +0. -.PP +.P If .I x is positive infinity, positive infinity is returned. -.PP +.P If .I x is zero, @@ -71,7 +71,7 @@ then a pole error occurs, and the functions return or .RB \- HUGE_VALL , respectively. -.PP +.P If .I x is negative (including negative infinity), then @@ -81,7 +81,7 @@ See .BR math_error (7) for information on how to determine whether an error has occurred when calling these functions. -.PP +.P The following errors can occur: .TP Domain error: \fIx\fP is negative @@ -115,12 +115,11 @@ T{ .BR logl () T} Thread safety MT-Safe .TE -.sp 1 .SH STANDARDS C11, POSIX.1-2008. .SH HISTORY C99, POSIX.1-2001. -.PP +.P The variant returning .I double also conforms to |