diff options
Diffstat (limited to 'src/floatfns.c')
| -rw-r--r-- | src/floatfns.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/floatfns.c b/src/floatfns.c index 1d891ef3ce1..13f0ca3e129 100644 --- a/src/floatfns.c +++ b/src/floatfns.c @@ -27,19 +27,22 @@ along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */ frexp, ldexp, log, log10 [via (log X 10)], *modf, pow, sin, *sinh, sqrt, tan, *tanh. - C99 and C11 require the following math.h functions in addition to + C99, C11 and C17 require the following math.h functions in addition to the C89 functions. Of these, Emacs currently exports only the starred ones to Lisp, since we haven't found a use for the others. Also, it uses the ones marked "+" internally: acosh, atanh, cbrt, copysign (implemented by signbit), erf, erfc, exp2, expm1, fdim, fma, fmax, fmin, fpclassify, hypot, +ilogb, - isfinite, isgreater, isgreaterequal, isinf, isless, islessequal, + +isfinite, isgreater, isgreaterequal, +isinf, isless, islessequal, islessgreater, *isnan, isnormal, isunordered, lgamma, log1p, *log2 [via (log X 2)], logb (approximately; implemented by frexp), +lrint/llrint, +lround/llround, nan, nearbyint, nextafter, nexttoward, remainder, remquo, *rint, round, scalbln, +scalbn, +signbit, tgamma, *trunc. + C23 requires many more math.h functions. Emacs does not yet export + or use them. + The C standard also requires functions for float and long double that are not listed above. Of these functions, Emacs uses only the following internally: fabsf, powf, sprintf. |