1208     pub fn strtod(s: *const c_char, p: *mut *mut c_char) -> c_double;  in strtod()  argument
1277     pub fn atan(x: c_double) -> c_double;  in atan()  argument
1279     pub fn ceil(x: c_double) -> c_double;  in ceil()  argument
1283     pub fn exp(x: c_double) -> c_double;  in exp()  argument
1285     pub fn fabs(x: c_double) -> c_double;  in fabs()  argument
1287     pub fn floor(x: c_double) -> c_double;  in floor()  argument
1289     pub fn frexp(x: c_double, e: *mut c_int) -> c_double;  in frexp()  argument
1291     pub fn log(x: c_double) -> c_double;  in log()  argument
1293     pub fn log2(x: c_double) -> c_double;  in log2()  argument
1295     pub fn pow(x: c_double, y: c_double) -> c_double;  in pow()  argument
1299     pub fn scalbn(x: c_double, n: c_int) -> c_double;  in scalbn()  argument
1301     pub fn sqrt(x: c_double) -> c_double;  in sqrt()  argument
1306     pub fn atof(s: *const c_char) -> c_double;  in atof()  argument
1324     pub fn ecvt(x: c_double, n: c_int, dp: *mut c_int, sign: *mut c_int) -> *mut c_char;  in ecvt()  argument
1336     pub fn wcstod(s: *const wchar_t, p: *mut *mut wchar_t) -> c_double;  in wcstod()  argument