ref: 18341c3b341f7f7c151673d2f79299f4074d378b
dir: /lib/math/fpmath.myr/
use std
pkg math =
trait fpmath @f =
/* fpmath-trunc-impl */
trunc : (f : @f -> @f)
ceil : (f : @f -> @f)
floor : (f : @f -> @f)
/* compute (s, t) with s = round-nearest(a+b), s + t = a + b */
// fast2sum : (a : @f, b : @f -> (@f, @f))
;;
impl std.equatable flt32
impl std.equatable flt64
impl fpmath flt32
impl fpmath flt64
;;
/*
We consider two floating-point numbers equal if their bits are
equal. This does not treat NaNs specially: two distinct NaNs may
compare equal, or they may compare distinct (if they arise from
different bit patterns).
Additionally, +0.0 and -0.0 compare differently.
*/
impl std.equatable flt32 =
eq = {a : flt32, b : flt32; -> std.flt32bits(a) == std.flt32bits(b)}
;;
impl std.equatable flt64 =
eq = {a : flt64, b : flt64; -> std.flt64bits(a) == std.flt64bits(b)}
;;
impl fpmath flt32 =
trunc = {f; -> trunc32(f)}
floor = {f; -> floor32(f)}
ceil = {f; -> ceil32(f)}
;;
impl fpmath flt64 =
trunc = {f; -> trunc64(f)}
floor = {f; -> floor64(f)}
ceil = {f; -> ceil64(f)}
;;
extern const trunc32 : (f : flt32 -> flt32)
extern const floor32 : (f : flt32 -> flt32)
extern const ceil32 : (f : flt32 -> flt32)
extern const trunc64 : (f : flt64 -> flt64)
extern const floor64 : (f : flt64 -> flt64)
extern const ceil64 : (f : flt64 -> flt64)