1206 		struct functions  struct
1212 			static expr plus(float x, float y) { return expr(x+y); }  in plus()
1218 			static expr minus(float x, float y) { return expr(x-y); }  in minus()
1224 			static expr multiplies(float x, float y) { return expr(x*y); }  in multiplies()
1230 			static expr divides(float x, float y) { return expr(x/y); }  in divides()
1236 …tream<charT,traits>& write(std::basic_ostream<charT,traits> &out, float arg) { return out << arg; }  in write()
1242 …its> static std::basic_istream<charT,traits>& read(std::basic_istream<charT,traits> &in, half &arg)  in read()
1254 			static expr fmod(float x, float y) { return expr(std::fmod(x, y)); }  in fmod()
1260 			static expr remainder(float x, float y)  in remainder()
1291 			static expr remquo(float x, float y, int *quo)  in remquo()
1337 			static expr fdim(float x, float y)  in fdim()
1351 			static expr fma(float x, float y, float z)  in fma()
1362 			static half nanh() { return half(binary, 0x7FFF); }  in nanh()
1367 			static expr exp(float arg) { return expr(std::exp(arg)); }  in exp()
1372 			static expr expm1(float arg)  in expm1()
1384 			static expr exp2(float arg)  in exp2()
1396 			static expr log(float arg) { return expr(std::log(arg)); }  in log()
1401 			static expr log10(float arg) { return expr(std::log10(arg)); }  in log10()
1406 			static expr log1p(float arg)  in log1p()
1418 			static expr log2(float arg)  in log2()
1430 			static expr sqrt(float arg) { return expr(std::sqrt(arg)); }  in sqrt()
1435 			static expr cbrt(float arg)  in cbrt()
1451 			static expr hypot(float x, float y)  in hypot()
1465 			static expr pow(float base, float exp) { return expr(std::pow(base, exp)); }  in pow()
1470 			static expr sin(float arg) { return expr(std::sin(arg)); }  in sin()
1475 			static expr cos(float arg) { return expr(std::cos(arg)); }  in cos()
1480 			static expr tan(float arg) { return expr(std::tan(arg)); }  in tan()
1485 			static expr asin(float arg) { return expr(std::asin(arg)); }  in asin()
1490 			static expr acos(float arg) { return expr(std::acos(arg)); }  in acos()
1495 			static expr atan(float arg) { return expr(std::atan(arg)); }  in atan()
1501 			static expr atan2(float x, float y) { return expr(std::atan2(x, y)); }  in atan2()
1506 			static expr sinh(float arg) { return expr(std::sinh(arg)); }  in sinh()
1511 			static expr cosh(float arg) { return expr(std::cosh(arg)); }  in cosh()
1516 			static expr tanh(float arg) { return expr(std::tanh(arg)); }  in tanh()
1521 			static expr asinh(float arg)  in asinh()
1533 			static expr acosh(float arg)  in acosh()
1545 			static expr atanh(float arg)  in atanh()
1557 			static expr erf(float arg)  in erf()
1569 			static expr erfc(float arg)  in erfc()
1581 			static expr lgamma(float arg)  in lgamma()
1603 			static expr tgamma(float arg)  in tgamma()
1627 …alf floor(half arg) { return half(binary, round_half<std::round_toward_neg_infinity>(arg.data_)); }  in floor()
1632 …tic half ceil(half arg) { return half(binary, round_half<std::round_toward_infinity>(arg.data_)); }  in ceil()
1637 …static half trunc(half arg) { return half(binary, round_half<std::round_toward_zero>(arg.data_)); }  in trunc()
1642 			static half round(half arg) { return half(binary, round_half_up(arg.data_)); }  in round()
1647 			static long lround(half arg) { return detail::half2int_up<long>(arg.data_); }  in lround()
1652 			static half rint(half arg) { return half(binary, round_half<half::round_style>(arg.data_)); }  in rint()
1657 			static long lrint(half arg) { return detail::half2int<half::round_style,long>(arg.data_); }  in lrint()
1663 			static long long llround(half arg) { return detail::half2int_up<long long>(arg.data_); }  in llround()
1668 …tic long long llrint(half arg) { return detail::half2int<half::round_style,long long>(arg.data_); }  in llrint()
1675 			static half frexp(half arg, int *exp)  in frexp()
1688 			static half modf(half arg, half *iptr)  in modf()
1708 			static half scalbln(half arg, long exp)  in scalbln()
1755 			static int ilogb(half arg)  in ilogb()
1775 			static half logb(half arg)  in logb()
1803 			static half nextafter(half from, half to)  in nextafter()
1821 			static half nexttoward(half from, long double to)  in nexttoward()
1837 			static half copysign(half x, half y) { return half(binary, x.data_^((x.data_^y.data_)&0x8000)); }  in copysign()
1843 			static int fpclassify(half arg)  in fpclassify()
1853 			static bool isfinite(half arg) { return (arg.data_&0x7C00) != 0x7C00; }  in isfinite()
1859 			static bool isinf(half arg) { return (arg.data_&0x7FFF) == 0x7C00; }  in isinf()
1865 			static bool isnan(half arg) { return (arg.data_&0x7FFF) > 0x7C00; }  in isnan()
1871 			static bool isnormal(half arg) { return ((arg.data_&0x7C00)!=0) & ((arg.data_&0x7C00)!=0x7C00); }  in isnormal()
1877 			static bool signbit(half arg) { return (arg.data_&0x8000) != 0; }  in signbit()
1884 … isequal(half x, half y) { return (x.data_==y.data_ || !((x.data_|y.data_)&0x7FFF)) && !isnan(x); }  in isequal()
1891 …isnotequal(half x, half y) { return (x.data_!=y.data_ && ((x.data_|y.data_)&0x7FFF)) || isnan(x); }  in isnotequal()
1898 			static bool isgreater(half x, half y)  in isgreater()
1909 			static bool isgreaterequal(half x, half y)  in isgreaterequal()
1920 			static bool isless(half x, half y)  in isless()
1931 			static bool islessequal(half x, half y)  in islessequal()
1942 			static bool islessgreater(half x, half y)  in islessgreater()
1956 			static bool isunordered(half x, half y) { return isnan(x) || isnan(y); }  in isunordered()
1959 			static double erf(double arg)  in erf()
1967 			static double lgamma(double arg)  in lgamma()