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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#[doc(hidden)]; // FIXME #3538
// function names are almost identical to C's libmath, a few have been
// renamed, grep for "rename:"
pub mod c_double_utils {
use libc::{c_double, c_int};
#[link_name = "m"]
#[abi = "cdecl"]
pub extern {
// Alpabetically sorted by link_name
unsafe fn acos(n: c_double) -> c_double;
unsafe fn asin(n: c_double) -> c_double;
unsafe fn atan(n: c_double) -> c_double;
unsafe fn atan2(a: c_double, b: c_double) -> c_double;
unsafe fn cbrt(n: c_double) -> c_double;
unsafe fn ceil(n: c_double) -> c_double;
unsafe fn copysign(x: c_double, y: c_double) -> c_double;
unsafe fn cos(n: c_double) -> c_double;
unsafe fn cosh(n: c_double) -> c_double;
unsafe fn erf(n: c_double) -> c_double;
unsafe fn erfc(n: c_double) -> c_double;
unsafe fn exp(n: c_double) -> c_double;
unsafe fn expm1(n: c_double) -> c_double;
unsafe fn exp2(n: c_double) -> c_double;
#[link_name="fabs"] unsafe fn abs(n: c_double) -> c_double;
// rename: for clarity and consistency with add/sub/mul/div
#[link_name="fdim"]
unsafe fn abs_sub(a: c_double, b: c_double) -> c_double;
unsafe fn floor(n: c_double) -> c_double;
// rename: for clarity and consistency with add/sub/mul/div
#[link_name="fma"]
unsafe fn mul_add(a: c_double, b: c_double, c: c_double) -> c_double;
#[link_name="fmax"]
unsafe fn fmax(a: c_double, b: c_double) -> c_double;
#[link_name="fmin"]
unsafe fn fmin(a: c_double, b: c_double) -> c_double;
unsafe fn nextafter(x: c_double, y: c_double) -> c_double;
unsafe fn frexp(n: c_double, value: &mut c_int) -> c_double;
unsafe fn hypot(x: c_double, y: c_double) -> c_double;
unsafe fn ldexp(x: c_double, n: c_int) -> c_double;
#[cfg(unix)]
#[link_name="lgamma_r"]
unsafe fn lgamma(n: c_double, sign: &mut c_int) -> c_double;
#[cfg(windows)]
#[link_name="__lgamma_r"]
unsafe fn lgamma(n: c_double, sign: &mut c_int) -> c_double;
// renamed: log is a reserved keyword; ln seems more natural, too
#[link_name="log"] unsafe fn ln(n: c_double) -> c_double;
// renamed: "logb" /often/ is confused for log2 by beginners
#[link_name="logb"] unsafe fn log_radix(n: c_double) -> c_double;
// renamed: to be consitent with log as ln
#[link_name="log1p"] unsafe fn ln1p(n: c_double) -> c_double;
unsafe fn log10(n: c_double) -> c_double;
unsafe fn log2(n: c_double) -> c_double;
#[link_name="ilogb"] unsafe fn ilog_radix(n: c_double) -> c_int;
unsafe fn modf(n: c_double, iptr: &mut c_double) -> c_double;
unsafe fn pow(n: c_double, e: c_double) -> c_double;
// FIXME (#1379): enable when rounding modes become available
// unsafe fn rint(n: c_double) -> c_double;
unsafe fn round(n: c_double) -> c_double;
// rename: for consistency with logradix
#[link_name="scalbn"] unsafe fn ldexp_radix(n: c_double, i: c_int) ->
c_double;
unsafe fn sin(n: c_double) -> c_double;
unsafe fn sinh(n: c_double) -> c_double;
unsafe fn sqrt(n: c_double) -> c_double;
unsafe fn tan(n: c_double) -> c_double;
unsafe fn tanh(n: c_double) -> c_double;
unsafe fn tgamma(n: c_double) -> c_double;
unsafe fn trunc(n: c_double) -> c_double;
// These are commonly only available for doubles
unsafe fn j0(n: c_double) -> c_double;
unsafe fn j1(n: c_double) -> c_double;
unsafe fn jn(i: c_int, n: c_double) -> c_double;
unsafe fn y0(n: c_double) -> c_double;
unsafe fn y1(n: c_double) -> c_double;
unsafe fn yn(i: c_int, n: c_double) -> c_double;
}
}
pub mod c_float_utils {
use libc::{c_float, c_int};
#[link_name = "m"]
#[abi = "cdecl"]
pub extern {
// Alpabetically sorted by link_name
#[link_name="acosf"] unsafe fn acos(n: c_float) -> c_float;
#[link_name="asinf"] unsafe fn asin(n: c_float) -> c_float;
#[link_name="atanf"] unsafe fn atan(n: c_float) -> c_float;
#[link_name="atan2f"]
unsafe fn atan2(a: c_float, b: c_float) -> c_float;
#[link_name="cbrtf"] unsafe fn cbrt(n: c_float) -> c_float;
#[link_name="ceilf"] unsafe fn ceil(n: c_float) -> c_float;
#[link_name="copysignf"] unsafe fn copysign(x: c_float,
y: c_float) -> c_float;
#[link_name="cosf"] unsafe fn cos(n: c_float) -> c_float;
#[link_name="coshf"] unsafe fn cosh(n: c_float) -> c_float;
#[link_name="erff"] unsafe fn erf(n: c_float) -> c_float;
#[link_name="erfcf"] unsafe fn erfc(n: c_float) -> c_float;
#[link_name="expf"] unsafe fn exp(n: c_float) -> c_float;
#[link_name="expm1f"]unsafe fn expm1(n: c_float) -> c_float;
#[link_name="exp2f"] unsafe fn exp2(n: c_float) -> c_float;
#[link_name="fabsf"] unsafe fn abs(n: c_float) -> c_float;
#[link_name="fdimf"]
unsafe fn abs_sub(a: c_float, b: c_float) -> c_float;
#[link_name="floorf"] unsafe fn floor(n: c_float) -> c_float;
#[link_name="frexpf"] unsafe fn frexp(n: c_float,
value: &mut c_int) -> c_float;
#[link_name="fmaf"]
unsafe fn mul_add(a: c_float, b: c_float, c: c_float) -> c_float;
#[link_name="fmaxf"]
unsafe fn fmax(a: c_float, b: c_float) -> c_float;
#[link_name="fminf"]
unsafe fn fmin(a: c_float, b: c_float) -> c_float;
#[link_name="nextafterf"]
unsafe fn nextafter(x: c_float, y: c_float) -> c_float;
#[link_name="hypotf"]
unsafe fn hypot(x: c_float, y: c_float) -> c_float;
#[link_name="ldexpf"]
unsafe fn ldexp(x: c_float, n: c_int) -> c_float;
#[cfg(unix)]
#[link_name="lgammaf_r"] unsafe fn lgamma(n: c_float,
sign: &mut c_int) -> c_float;
#[cfg(windows)]
#[link_name="__lgammaf_r"]
unsafe fn lgamma(n: c_float, sign: &mut c_int) -> c_float;
#[link_name="logf"] unsafe fn ln(n: c_float) -> c_float;
#[link_name="logbf"] unsafe fn log_radix(n: c_float) -> c_float;
#[link_name="log1pf"] unsafe fn ln1p(n: c_float) -> c_float;
#[link_name="log2f"] unsafe fn log2(n: c_float) -> c_float;
#[link_name="log10f"] unsafe fn log10(n: c_float) -> c_float;
#[link_name="ilogbf"] unsafe fn ilog_radix(n: c_float) -> c_int;
#[link_name="modff"] unsafe fn modf(n: c_float,
iptr: &mut c_float) -> c_float;
#[link_name="powf"] unsafe fn pow(n: c_float, e: c_float) -> c_float;
// FIXME (#1379): enable when rounding modes become available
// #[link_name="rintf"] unsafe fn rint(n: c_float) -> c_float;
#[link_name="roundf"] unsafe fn round(n: c_float) -> c_float;
#[link_name="scalbnf"] unsafe fn ldexp_radix(n: c_float, i: c_int)
-> c_float;
#[link_name="sinf"] unsafe fn sin(n: c_float) -> c_float;
#[link_name="sinhf"] unsafe fn sinh(n: c_float) -> c_float;
#[link_name="sqrtf"] unsafe fn sqrt(n: c_float) -> c_float;
#[link_name="tanf"] unsafe fn tan(n: c_float) -> c_float;
#[link_name="tanhf"] unsafe fn tanh(n: c_float) -> c_float;
#[link_name="tgammaf"] unsafe fn tgamma(n: c_float) -> c_float;
#[link_name="truncf"] unsafe fn trunc(n: c_float) -> c_float;
}
}
// PORT check these by running src/etc/machconsts.c for your architecture
// FIXME obtain machine float/math constants automatically (Issue #1986)
pub mod c_float_targ_consts {
pub static radix: uint = 2u;
pub static mantissa_digits: uint = 24u;
pub static digits: uint = 6u;
pub static min_exp: uint = -125u;
pub static max_exp: uint = 128u;
pub static min_10_exp: int = -37;
pub static max_10_exp: int = 38;
// FIXME (#1433): this is wrong, replace with hexadecimal (%a) staticants
// below.
pub static min_value: f32 = 1.175494e-38_f32;
pub static max_value: f32 = 3.402823e+38_f32;
pub static epsilon: f32 = 0.000000_f32;
}
pub mod c_double_targ_consts {
pub static radix: uint = 2u;
pub static mantissa_digits: uint = 53u;
pub static digits: uint = 15u;
pub static min_exp: uint = -1021u;
pub static max_exp: uint = 1024u;
pub static min_10_exp: int = -307;
pub static max_10_exp: int = 308;
// FIXME (#1433): this is wrong, replace with hexadecimal (%a) staticants
// below.
pub static min_value: f64 = 2.225074e-308_f64;
pub static max_value: f64 = 1.797693e+308_f64;
pub static epsilon: f64 = 2.220446e-16_f64;
}
/*
FIXME use these once they can be parsed (see Issue #1433)
pub mod c_float_math_consts {
pub static pi: c_float = 0x1.921fb6p+1_f32;
pub static div_1_pi: c_float = 0x1.45f306p-2_f32;
pub static div_2_pi: c_float = 0x1.45f306p-1_f32;
pub static div_pi_2: c_float = 0x1.921fb6p+0_f32;
pub static div_pi_4: c_float = 0x1.921fb6p-1_f32;
pub static div_2_sqrtpi: c_float = 0x1.20dd76p+0_f32;
pub static e: c_float = 0x1.5bf0a8p+1_f32;
pub static log2_e: c_float = 0x1.715476p+0_f32;
pub static log10_e: c_float = 0x1.bcb7b2p-2_f32;
pub static ln_2: c_float = 0x1.62e43p-1_f32;
pub static ln_10: c_float = 0x1.26bb1cp+1_f32;
pub static sqrt2: c_float = 0x1.6a09e6p+0_f32;
pub static div_1_sqrt2: c_float = 0x1.6a09e6p-1_f32;
}
pub mod c_double_math_consts {
pub static pi: c_double = 0x1.921fb54442d18p+1_f64;
pub static div_1_pi: c_double = 0x1.45f306dc9c883p-2_f64;
pub static div_2_pi: c_double = 0x1.45f306dc9c883p-1_f64;
pub static div_pi_2: c_double = 0x1.921fb54442d18p+0_f64;
pub static div_pi_4: c_double = 0x1.921fb54442d18p-1_f64;
pub static div_2_sqrtpi: c_double = 0x1.20dd750429b6dp+0_f64;
pub static e: c_double = 0x1.5bf0a8b145769p+1_f64;
pub static log2_e: c_double = 0x1.71547652b82fep+0_f64;
pub static log10_e: c_double = 0x1.bcb7b1526e50ep-2_f64;
pub static ln_2: c_double = 0x1.62e42fefa39efp-1_f64;
pub static ln_10: c_double = 0x1.26bb1bbb55516p+1_f64;
pub static sqrt2: c_double = 0x1.6a09e667f3bcdp+0_f64;
pub static div_1_sqrt2: c_double = 0x1.6a09e667f3bcdp-1_f64;
}
pub mod c_float_targ_consts {
pub static radix: uint = 2u;
pub static mantissa_digits: uint = 24u;
pub static digits: uint = 6u;
pub static min_exp: int = -125;
pub static max_exp: int = 128;
pub static min_10_exp: int = -37;
pub static max_10_exp: int = 38;
pub static min_value: c_float = 0x1p-126_f32;
pub static max_value: c_float = 0x1.fffffep+127_f32;
pub static epsilon: c_float = 0x1p-23_f32;
}
pub mod c_double_targ_consts {
pub static radix: uint = 2u;
pub static mantissa_digits: uint = 53u;
pub static digits: uint = 15u;
pub static min_exp: int = -1021;
pub static max_exp: int = 1024;
pub static min_10_exp: int = -307;
pub static max_10_exp: int = 308;
pub static min_value: c_double = 0x1p-1022_f64;
pub static max_value: c_double = 0x1.fffffffffffffp+1023_f64;
pub static epsilon: c_double = 0x1p-52_f64;
}
*/
//
// Local Variables:
// mode: rust
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// End:
//
|
