diff options
Diffstat (limited to 'lib/libc/gen/fpclassify.3')
| -rw-r--r-- | lib/libc/gen/fpclassify.3 | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/lib/libc/gen/fpclassify.3 b/lib/libc/gen/fpclassify.3 index 795887da2a60..f52d8a98eccb 100644 --- a/lib/libc/gen/fpclassify.3 +++ b/lib/libc/gen/fpclassify.3 @@ -48,41 +48,42 @@ The .Fn fpclassify macro takes an argument of -.Va x +.Fa x and returns one of the following manifest constants. .Bl -tag -width ".Dv FP_SUBNORMAL" .It Dv FP_INFINITE Indicates that -.Va x +.Fa x is an infinite number. .It Dv FP_NAN Indicates that -.Va x +.Fa x is not a number (NaN). .It Dv FP_NORMAL Indicates that -.Va x +.Fa x is a normalized number. .It Dv FP_SUBNORMAL Indicates that -.Va x +.Fa x is a denormalized number. .It Dv FP_ZERO Indicates that -.Va x -is zero (0 or -0). +.Fa x +is zero (0 or \-0). .El .Pp The .Fn isfinite macro returns a non-zero value if and only if its argument has -a finite (zero, subnormal, or normal) value. The +a finite (zero, subnormal, or normal) value. +The .Fn isinf , .Fn isnan , and .Fn isnormal macros return non-zero if and only if -.Va x +.Fa x is an infinity, NaN, or a non-zero normalized number, respectively. .Pp @@ -121,7 +122,7 @@ introduced and .Fn isnan functions, which accepted -.Ft double +.Vt double arguments; these have been superseded by the macros described above. .Sh BUGS |