diff options
| -rw-r--r-- | src/vppinfra/format.c | 7 | ||||
| -rw-r--r-- | src/vppinfra/math.h | 8 |
2 files changed, 14 insertions, 1 deletions
diff --git a/src/vppinfra/format.c b/src/vppinfra/format.c index 999b093c174..70292c048ec 100644 --- a/src/vppinfra/format.c +++ b/src/vppinfra/format.c @@ -62,6 +62,7 @@ #include <vppinfra/error.h> #include <vppinfra/string.h> #include <vppinfra/os.h> /* os_puts */ +#include <vppinfra/math.h> typedef struct { @@ -708,8 +709,12 @@ format_float (u8 * s, f64 x, uword n_fraction_digits, uword output_style) sign = 1; } + /* Check for not-a-number. */ + if (isnan (x)) + return format (s, "%cNaN", sign ? '-' : '+'); + /* Check for infinity. */ - if (x == x / 2) + if (isinf (x)) return format (s, "%cinfinity", sign ? '-' : '+'); x = normalize (x, &expon, &prec); diff --git a/src/vppinfra/math.h b/src/vppinfra/math.h index 48f8c0f4b83..cafa1cb3d3f 100644 --- a/src/vppinfra/math.h +++ b/src/vppinfra/math.h @@ -52,6 +52,14 @@ fabs (f64 x) return __builtin_fabs (x); } +#ifndef isnan +#define isnan(x) __builtin_isnan(x) +#endif + +#ifndef isinf +#define isinf(x) __builtin_isinf(x) +#endif + #endif /* included_math_h */ /* |