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* floatfns.c: Add commentary re C99 and C11.

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Paul Eggert 2013-06-19 18:19:43 -07:00
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src/floatfns.c
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@ -26,6 +26,17 @@ along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
the starred functions since we haven't found a use for them:
acos, asin, atan, atan2, ceil, cos, *cosh, exp, fabs, floor, fmod,
frexp, ldexp, log, log10, *modf, pow, sin, *sinh, sqrt, tan, *tanh.
C99 and C11 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:
acosh, atanh, cbrt, *copysign, erf, erfc, exp2, expm1, fdim, fma,
fmax, fmin, fpclassify, hypot, ilogb, isfinite, isgreater,
isgreaterequal, isinf, isless, islessequal, islessgreater, *isnan,
isnormal, isunordered, lgamma, log1p, log2, *logb (approximately),
lrint/llrint, lround/llround, nan, nearbyint, nextafter,
nexttoward, remainder, remquo, *rint, round, scalbln, scalbn,
signbit, tgamma, trunc.
*/
#include <config.h>