racket/collects/math/private/utils/flonum-tests.rkt
Neil Toronto aed3b39546 Added flexp2', fllog2', `fllogb'; refactored and documented flonum testing
Note: With this refactoring, `math/utils' no longer depends on `rackunit'.

* (flexp2 x) computes (flexpt 2.0 x) but in about 1/3 the time for integer
  `x' using a lookup table. Written for exact argument reduction in `fllog2'
  after discovering that (flexpt 2.0 x) was the main performance bottleneck.

* (fllog2 x) computes (/ (fllog x) (fllog 2.0)) with near perfect accuracy.
  Invented an algorithm to compute it with at least 8 extra bits before
  final rounding; quite pleased with the result. Needed `fllog2' to ensure
  (fllogb 2.0 x) would be exact when `x' is a power of two.

* (fllogb b x) computes (/ (fllog x) (fllog b)) with better accuracy, and
  also handles limit values in a way that's consistent with the mathematical
  limits. When those are ambiguous, it's consistent with `flexpt', which
  follows IEEE 754 and C99. Otherwise returns +nan.0. See docs for details.

* `bflogb' is currently just for testing `fllogb'.

* Refactored FPU testing and documented it. So far, the only documented way
  to do it is by calling `test-floating-point', which runs a comprehensive
  deterministic+randomized suite of tests and returns a list representing
  failed tests. I'll document individual tests after I document flonum
  expansions and result/error functions like `fl+/error'.

* Added `fllog2' and `fllogb' to the flonum tests.
2013-01-28 17:44:33 -07:00

536 lines
21 KiB
Racket

#lang typed/racket/base
(require racket/math
racket/list
"../base/base-random.rkt"
"../flonum/expansion/expansion-base.rkt"
"../flonum/expansion/expansion-exp.rkt"
"../flonum/expansion/expansion-log.rkt"
"../flonum/flonum-functions.rkt"
"../flonum/flonum-constants.rkt"
"../flonum/flonum-bits.rkt"
"../flonum/flonum-error.rkt"
"../flonum/flonum-log.rkt"
"../bigfloat/bigfloat-log-arithmetic.rkt"
"../distributions/dist-struct.rkt"
"../distributions/geometric-dist.rkt"
"../../bigfloat.rkt")
(provide
print-fp-test-progress?
;; Unary flonum tests
test-flabs
test-flsqrt
test-fllog
test-flexp
test-flsin
test-flcos
test-fltan
test-flasin
test-flacos
test-flatan
test-fllog2
;; Binary flonum tests
test-fl+
test-fl*
test-fl-
test-fl/
test-flexpt
test-fllogb
;; Unary flop/error tests
test-flsqr/error
test-flsqrt/error
test-flexp/error
;; Binary flop/error tests
test-fl+/error
test-fl-/error
test-fl*/error
test-fl//error
;; fl2 conversion test
test-fl2
;; Unary fl2 tests
test-fl2abs
test-fl2sqr
test-fl2sqrt
test-fl2exp
test-fl2expm1
test-fl2log
test-fl2log1p
;; Binary fl2 tests
test-fl2+
test-fl2-
test-fl2*
test-fl2/
;; Comprehensive test
test-floating-point)
;; Allowable error for different kinds of functions, in ulps
(define flonum-fun-ulps 0.5)
(define fllog2-ulps 1.0)
(define fllogb-ulps 2.5)
(define flonum/error-fun-ulps 0.5)
(define flexp/error-fun-ulps 3.0)
(define fl2-conversion-ulps 0.5)
(define unary-fl2-fun-ulps 1.0)
(define binary-fl2-fun-ulps 8.0)
(define fl2exp-fun-ulps 3.0)
(define fl2log-fun-ulps 2.0)
(: current-max-ulp-error (Parameterof Nonnegative-Flonum))
(define current-max-ulp-error (make-parameter 0.0))
;; ===================================================================================================
;; Helpers
(: different-zero? (Real Real -> Boolean))
(define (different-zero? x y)
(or (and (eqv? x -0.0) (eqv? y 0.0))
(and (eqv? x 0.0) (eqv? y -0.0))))
(: fl2->real* (Flonum Flonum -> Real))
;; Like `fl2->real', but returns signed flonum zeros
(define (fl2->real* x2 x1)
(define x.0 (fl+ x2 x1))
(cond [(zero? x.0) x2]
[else (fl2->real x2 x1)]))
(: bigfloat->real* (Bigfloat -> Real))
;; Like `bigfloat->real*', but returns a signed infinity or a signed flonum zero if conversion would
;; overflow or underflow a flonum
(define (bigfloat->real* x)
(define x.0 (bigfloat->flonum x))
(cond [(fl= x.0 0.0) x.0]
[(flrational? x.0) (bigfloat->real x)]
[else x.0]))
(: filter/ulp-error (All (A B) ((Listof (List A (U B Flonum)))
Flonum -> (Listof (List A (U B Flonum))))))
(define (filter/ulp-error xes ulps)
(filter (λ: ([xe : (List A (U B Flonum))])
(define e (second xe))
(or (not (flonum? e)) (e . fl> . ulps)))
xes))
(: print-fp-test-progress? (Parameterof Boolean))
(define print-fp-test-progress? (make-parameter #t))
(define progress-chunk-size 200)
(define progress-superchunk-chunks 5)
(: maybe-print-progress (Symbol Integer Natural -> Void))
(define (maybe-print-progress name i m)
(when (and (print-fp-test-progress?) (i . > . 0) (i . <= . m))
(let* ([flush? (cond [(= i 1) (printf "~a: " name)]
[else #f])]
[flush? (cond [(= 0 (modulo i progress-chunk-size))
(cond [(= 0 (modulo i (* progress-superchunk-chunks
progress-chunk-size)))
(printf "* ~a " i)]
[else (printf "*")])]
[else flush?])]
[flush? (cond [(= i m) (printf "* ~a~n" m)]
[else flush?])])
(when flush? (flush-output)))))
;; ===================================================================================================
;; Test case generation
;; Deteriministic test cases
(define standard-xs
(list
;; Test the sign of the return value of `flexpt'
-1001.0 -10.0 -0.1 +0.1 +10.0 +1001.0
;; Test squaring
(- (flsqrt +min.0)) (flsqrt +min.0)
(- (flsqrt +max-subnormal.0)) (flsqrt +max-subnormal.0)
(- (flsqrt +max-subnormal.hi)) (flsqrt +max-subnormal.hi)
(- (flsqrt +max.0)) (flsqrt +max.0)
;; Test exp limits
(fllog +min.0) (fllog +max-subnormal.0) (fllog +max-subnormal.hi) (fllog +max.0)
;; Standard special values
-inf.0 -max.0 -1.0 -max-subnormal.hi -max-subnormal.0 -min.0 -0.0
+inf.0 +max.0 +1.0 +max-subnormal.hi +max-subnormal.0 +min.0 +0.0
+nan.0))
(define standard-rs
(append standard-xs
(list +10 +1 +1/7 +1/10 +1/13
-10 -1 -1/7 -1/10 -1/13
0)))
(: product (All (A B) ((Listof A) (Listof B) -> (Values (Listof A) (Listof B)))))
(define (product as bs)
(define abs
(append*
(for/list: : (Listof (Listof (Pair A B))) ([a (in-list as)])
(for/list: : (Listof (Pair A B)) ([b (in-list bs)])
(cons a b)))))
(values (map (inst car A B) abs) (map (inst cdr A B) abs)))
;; Random test cases
(define min-subnormal-ord (flonum->ordinal -max-subnormal.0))
(define max-subnormal-ord (+ 1 (flonum->ordinal +max-subnormal.0)))
(define min-fl2-subnormal-ord (flonum->ordinal -max-subnormal.hi))
(define max-fl2-subnormal-ord (+ 1 (flonum->ordinal +max-subnormal.hi)))
(: sample-flonum (case-> (Integer -> (Listof Flonum))
(Integer Flonum Flonum -> (Listof Flonum))))
(define (sample-flonum n [mn -inf.0] [mx +inf.0])
(define min-ord (flonum->ordinal mn))
(define max-ord (+ 1 (flonum->ordinal mx)))
(let ([min-subnormal-ord (max min-ord min-subnormal-ord)]
[max-subnormal-ord (min max-ord max-subnormal-ord)]
[min-fl2-subnormal-ord (max min-ord min-fl2-subnormal-ord)]
[max-fl2-subnormal-ord (min max-ord max-fl2-subnormal-ord)])
(build-list
n (λ (_)
(define r (random))
(ordinal->flonum
(cond [(and (min-subnormal-ord . < . max-subnormal-ord) (r . < . 0.1))
(random-integer min-subnormal-ord max-subnormal-ord)]
[(and (min-fl2-subnormal-ord . < . max-fl2-subnormal-ord) (r . < . 0.2))
(random-integer min-subnormal-ord max-subnormal-ord)]
[else
(random-integer min-ord max-ord)]))))))
(define denom-dist (geometric-dist 1e-32))
(: sample-rational (Integer -> (Listof Exact-Rational)))
(define (sample-rational n)
(map (λ: ([f1 : Flonum] [d : Integer])
(+ (inexact->exact f1)
(* (if ((random) . > . 0.5) -1 1)
(/ (random-natural (+ 1 d)) d)
(expt 2 (- (exact-round (/ (fllog (flabs f1)) (fllog 2.0))) 52)))))
(sample-flonum n)
(map (λ: ([x : Flonum]) (+ 1 (exact-floor x))) (sample denom-dist n))))
;; ===================================================================================================
;; Flonum functions
(define-type Flonum-Error (U Flonum (List Symbol Flonum Real)))
(define-type Unary-Flonum-Failure (List (List Symbol Flonum) Flonum-Error))
(define-type Binary-Flonum-Failure (List (List Symbol Flonum Flonum) Flonum-Error))
(: flonum-error (Flonum Bigfloat -> Flonum-Error))
(define (flonum-error z z0.bf)
(define z0 (bigfloat->real* z0.bf))
(cond [(different-zero? z z0) (list 'different-zero? z z0)]
[else (flulp-error z z0)]))
(: unary-flonum-fun-error ((Flonum -> Flonum) (Bigfloat -> Bigfloat) Flonum -> Flonum-Error))
(define (unary-flonum-fun-error f g x)
(flonum-error (f x) (parameterize ([bf-precision 53])
(g (bf x)))))
(: test-unary-flonum-fun
(Symbol (Flonum -> Flonum) (Bigfloat -> Bigfloat) Integer Flonum Flonum
-> (Listof Unary-Flonum-Failure)))
(define (test-unary-flonum-fun name f g n mn mx)
(define xs (append standard-xs (sample-flonum n mn mx)))
(define m (length xs))
(filter/ulp-error
(for/list: : (Listof Unary-Flonum-Failure) ([x (in-list xs)]
[i (in-naturals 1)])
(maybe-print-progress name i m)
(list (list name x) (unary-flonum-fun-error f g x)))
(current-max-ulp-error)))
(: binary-flonum-fun-error
((Flonum Flonum -> Flonum) (Bigfloat Bigfloat -> Bigfloat) Flonum Flonum -> Flonum-Error))
(define (binary-flonum-fun-error f g x y)
(flonum-error (f x y) (parameterize ([bf-precision 53])
(g (bf x) (bf y)))))
(: test-binary-flonum-fun
(Symbol (Flonum Flonum -> Flonum) (Bigfloat Bigfloat -> Bigfloat) Integer
-> (Listof Binary-Flonum-Failure)))
(define (test-binary-flonum-fun name f g n)
(define-values (pre-xs pre-ys) (product standard-xs standard-xs))
(define xs (append pre-xs (sample-flonum n)))
(define ys (append pre-ys (sample-flonum n)))
(define m (length xs))
(filter/ulp-error
(for/list: : (Listof Binary-Flonum-Failure) ([x (in-list xs)]
[y (in-list ys)]
[i (in-naturals 1)])
(maybe-print-progress name i m)
(list (list name x y) (binary-flonum-fun-error f g x y)))
(current-max-ulp-error)))
;; ===================================================================================================
;; fl2 conversion
(define-type Fl2-Error (U Flonum (List Symbol Flonum Real)))
(define-type Fl2-Failure (List (List 'fl2 Real) Fl2-Error))
(: fl2-error (Flonum Flonum Real -> Fl2-Error))
(define (fl2-error x2 x1 x)
(cond [(not (fl2? x2 x1)) (list 'not-fl2? x2 x1)]
[(different-zero? x2 x) (list 'different-zero? x2 x)]
[else (fl2ulp-error x2 x1 x)]))
(: fl2-conversion-error (Real -> Fl2-Error))
(define (fl2-conversion-error x)
(define-values (x2 x1) (fl2 x))
(fl2-error x2 x1 x))
(: test-fl2-conversion (Integer -> (Listof Fl2-Failure)))
(define (test-fl2-conversion n)
(define xs (append standard-rs (sample-rational n)))
(define m (length xs))
(filter/ulp-error
(for/list: : (Listof Fl2-Failure) ([x (in-list xs)]
[i (in-naturals 1)])
(maybe-print-progress 'fl2 i m)
(list (list 'fl2 x) (fl2-conversion-error x)))
(current-max-ulp-error)))
;; ===================================================================================================
;; Flonum arithmetic with error
(define-type Unary-Fl/Error-Failure (List (List Symbol Flonum) Fl2-Error))
(define-type Binary-Fl/Error-Failure (List (List Symbol Flonum Flonum) Fl2-Error))
(: unary-flonum/error-fun-error ((Flonum -> (Values Flonum Flonum)) (Bigfloat -> Bigfloat) Flonum
-> Fl2-Error))
(define (unary-flonum/error-fun-error f g x)
(define-values (z2 z1) (f x))
(fl2-error z2 z1 (parameterize ([bf-precision 256])
(bigfloat->real* (g (bf x))))))
(: binary-flonum/error-fun-error ((Flonum Flonum -> (Values Flonum Flonum))
(Bigfloat Bigfloat -> Bigfloat)
Flonum Flonum
-> Fl2-Error))
(define (binary-flonum/error-fun-error f g x y)
(define-values (z2 z1) (f x y))
(fl2-error z2 z1 (parameterize ([bf-precision 256])
(bigfloat->real* (g (bf x) (bf y))))))
(: test-unary-flonum/error-fun
(Symbol (Flonum -> (Values Flonum Flonum)) (Bigfloat -> Bigfloat) Integer
-> (Listof Unary-Fl/Error-Failure)))
(define (test-unary-flonum/error-fun name f g n)
(define xs (append standard-xs (sample-flonum n)))
(define m (length xs))
(filter/ulp-error
(for/list: : (Listof Unary-Fl/Error-Failure) ([x (in-list xs)]
[i (in-naturals 1)])
(maybe-print-progress name i m)
(list (list name x) (unary-flonum/error-fun-error f g x)))
(current-max-ulp-error)))
(: test-binary-flonum/error-fun
(Symbol (Flonum Flonum -> (Values Flonum Flonum)) (Bigfloat Bigfloat -> Bigfloat) Integer
-> (Listof Binary-Fl/Error-Failure)))
(define (test-binary-flonum/error-fun name f g n)
(define-values (pre-xs pre-ys) (product standard-xs standard-xs))
(define xs (append pre-xs (sample-flonum n)))
(define ys (append pre-ys (sample-flonum n)))
(define m (length xs))
(filter/ulp-error
(for/list: : (Listof Binary-Fl/Error-Failure) ([x (in-list xs)]
[y (in-list ys)]
[i (in-naturals 1)])
(maybe-print-progress name i m)
(list (list name x y) (binary-flonum/error-fun-error f g x y)))
(current-max-ulp-error)))
;; ===================================================================================================
;; Flonum expansions
(define-type Unary-Fl2-Failure (List (List Symbol Flonum Flonum) Fl2-Error))
(define-type Binary-Fl2-Failure (List (List Symbol Flonum Flonum Flonum Flonum) Fl2-Error))
(: unary-fl2-fun-error ((Flonum Flonum -> (Values Flonum Flonum)) (Bigfloat -> Bigfloat)
Flonum Flonum -> Fl2-Error))
(define (unary-fl2-fun-error f g x2 x1)
(define-values (z2 z1) (f x2 x1))
(fl2-error z2 z1 (parameterize ([bf-precision 256])
(bigfloat->real* (g (bf (fl2->real* x2 x1)))))))
(: test-unary-fl2-fun
(Symbol (Flonum Flonum -> (Values Flonum Flonum)) (Bigfloat -> Bigfloat) Integer
-> (Listof Unary-Fl2-Failure)))
(define (test-unary-fl2-fun name f g n)
(define xs (append standard-rs (sample-rational n)))
(define m (length xs))
(filter/ulp-error
(for/list: : (Listof Unary-Fl2-Failure) ([x (in-list xs)]
[i (in-naturals 1)])
(maybe-print-progress name i m)
(define-values (x2 x1) (fl2 x))
(list (list name x2 x1) (unary-fl2-fun-error f g x2 x1)))
(current-max-ulp-error)))
(: binary-fl2-fun-error ((Flonum Flonum Flonum Flonum -> (Values Flonum Flonum))
(Bigfloat Bigfloat -> Bigfloat)
Flonum Flonum Flonum Flonum
-> Fl2-Error))
(define (binary-fl2-fun-error f g x2 x1 y2 y1)
(define-values (z2 z1) (f x2 x1 y2 y1))
(fl2-error z2 z1 (parameterize ([bf-precision 256])
(bigfloat->real* (g (bf (fl2->real* x2 x1)) (bf (fl2->real* y2 y1)))))))
(: test-binary-fl2-fun
(Symbol (Flonum Flonum Flonum Flonum -> (Values Flonum Flonum)) (Bigfloat Bigfloat -> Bigfloat)
Integer -> (Listof Binary-Fl2-Failure)))
(define (test-binary-fl2-fun name f g n)
(define-values (pre-xs pre-ys) (product standard-rs standard-rs))
(define xs (append pre-xs (sample-rational n)))
(define ys (append pre-ys (sample-rational n)))
(define m (length xs))
(filter/ulp-error
(for/list: : (Listof Binary-Fl2-Failure) ([x (in-list xs)]
[y (in-list ys)]
[i (in-naturals 1)])
(maybe-print-progress name i m)
(define-values (x2 x1) (fl2 x))
(define-values (y2 y1) (fl2 y))
(list (list name x2 x1 y2 y1) (binary-fl2-fun-error f g x2 x1 y2 y1)))
(current-max-ulp-error)))
;; ===================================================================================================
;; Flonum tests
(define-syntax-rule (define-unary-flonum-test test-name flop bfop mn mx ulps)
(begin (: test-name (Natural -> (Listof Unary-Flonum-Failure)))
(define (test-name n)
(parameterize ([current-max-ulp-error ulps])
(test-unary-flonum-fun 'flop flop bfop n mn mx)))))
(define-syntax-rule (define-binary-flonum-test test-name flop bfop ulps)
(begin (: test-name (Natural -> (Listof Binary-Flonum-Failure)))
(define (test-name n)
(parameterize ([current-max-ulp-error ulps])
(test-binary-flonum-fun 'flop flop bfop n)))))
(define-unary-flonum-test test-flabs flabs bfabs -inf.0 +inf.0 flonum-fun-ulps)
(define-unary-flonum-test test-flsqrt flsqrt bfsqrt 0.0 +inf.0 flonum-fun-ulps)
(define-unary-flonum-test test-fllog fllog bflog 0.0 +inf.0 flonum-fun-ulps)
(define-unary-flonum-test test-flexp flexp bfexp -746.0 710.0 flonum-fun-ulps)
(define-unary-flonum-test test-flsin flsin bfsin -inf.0 +inf.0 flonum-fun-ulps)
(define-unary-flonum-test test-flcos flcos bfcos -inf.0 +inf.0 flonum-fun-ulps)
(define-unary-flonum-test test-fltan fltan bftan -inf.0 +inf.0 flonum-fun-ulps)
(define-unary-flonum-test test-flasin flasin bfasin -1.0 1.0 flonum-fun-ulps)
(define-unary-flonum-test test-flacos flacos bfacos -1.0 1.0 flonum-fun-ulps)
(define-unary-flonum-test test-flatan flatan bfatan -inf.0 +inf.0 flonum-fun-ulps)
(define-unary-flonum-test test-fllog2 fllog2 bflog2 0.0 +inf.0 fllog2-ulps)
(define-binary-flonum-test test-fl+ fl+ bf+ flonum-fun-ulps)
(define-binary-flonum-test test-fl- fl- bf- flonum-fun-ulps)
(define-binary-flonum-test test-fl* fl* bf* flonum-fun-ulps)
(define-binary-flonum-test test-fl/ fl/ bf/ flonum-fun-ulps)
(define-binary-flonum-test test-flexpt flexpt bfexpt flonum-fun-ulps)
(define-binary-flonum-test test-fllogb fllogb bflogb fllogb-ulps)
;; ===================================================================================================
;; Flonum/error tests
(define-syntax-rule (define-unary-flop/error-test test-name flop bfop ulps)
(begin (: test-name (Natural -> (Listof Unary-Fl/Error-Failure)))
(define (test-name n)
(parameterize ([current-max-ulp-error ulps])
(test-unary-flonum/error-fun 'flop flop bfop n)))))
(define-syntax-rule (define-binary-flop/error-test test-name flop bfop ulps)
(begin (: test-name (Natural -> (Listof Binary-Fl/Error-Failure)))
(define (test-name n)
(parameterize ([current-max-ulp-error ulps])
(test-binary-flonum/error-fun 'flop flop bfop n)))))
(define-unary-flop/error-test test-flsqr/error flsqr/error bfsqr flonum/error-fun-ulps)
(define-unary-flop/error-test test-flsqrt/error flsqrt/error bfsqrt flonum/error-fun-ulps)
(define-unary-flop/error-test test-flexp/error flexp/error bfexp flexp/error-fun-ulps)
(define-binary-flop/error-test test-fl+/error fl+/error bf+ flonum/error-fun-ulps)
(define-binary-flop/error-test test-fl-/error fl-/error bf- flonum/error-fun-ulps)
(define-binary-flop/error-test test-fl*/error fl*/error bf* flonum/error-fun-ulps)
(define-binary-flop/error-test test-fl//error fl//error bf/ flonum/error-fun-ulps)
;; ===================================================================================================
;; fl2 tests
(: test-fl2 (Natural -> (Listof Fl2-Failure)))
(define (test-fl2 n)
(parameterize ([current-max-ulp-error fl2-conversion-ulps])
(test-fl2-conversion n)))
(define-syntax-rule (define-unary-fl2-test test-name fl2op bfop ulps)
(begin (: test-name (Natural -> (Listof Unary-Fl2-Failure)))
(define (test-name n)
(parameterize ([current-max-ulp-error ulps])
(test-unary-fl2-fun 'fl2op fl2op bfop n)))))
(define-syntax-rule (define-binary-fl2-test test-name fl2op bfop ulps)
(begin (: test-name (Natural -> (Listof Binary-Fl2-Failure)))
(define (test-name n)
(parameterize ([current-max-ulp-error ulps])
(test-binary-fl2-fun 'fl2op fl2op bfop n)))))
(define-unary-fl2-test test-fl2abs fl2abs bfabs unary-fl2-fun-ulps)
(define-unary-fl2-test test-fl2sqr fl2sqr bfsqr unary-fl2-fun-ulps)
(define-unary-fl2-test test-fl2sqrt fl2sqrt bfsqrt unary-fl2-fun-ulps)
(define-unary-fl2-test test-fl2exp fl2exp bfexp fl2exp-fun-ulps)
(define-unary-fl2-test test-fl2expm1 fl2expm1 bfexpm1 fl2exp-fun-ulps)
(define-unary-fl2-test test-fl2log fl2log bflog fl2log-fun-ulps)
(define-unary-fl2-test test-fl2log1p fl2log1p bflog1p fl2log-fun-ulps)
(define-binary-fl2-test test-fl2+ fl2+ bf+ binary-fl2-fun-ulps)
(define-binary-fl2-test test-fl2- fl2- bf- binary-fl2-fun-ulps)
(define-binary-fl2-test test-fl2* fl2* bf* binary-fl2-fun-ulps)
(define-binary-fl2-test test-fl2/ fl2/ bf/ binary-fl2-fun-ulps)
;; ===================================================================================================
;; Comprehensive test
(: test-floating-point (Natural -> (Listof (U Unary-Flonum-Failure
Binary-Flonum-Failure
Unary-Fl/Error-Failure
Binary-Fl/Error-Failure
Fl2-Failure
Unary-Fl2-Failure
Binary-Fl2-Failure))))
(define (test-floating-point n)
(append
;; Hardware implementation tests
(test-flabs n)
(test-fl+ n)
(test-fl* n)
(test-fl- n)
(test-fl/ n)
(test-flsqrt n)
(test-fllog n)
(test-flexp n)
(test-flexpt n)
(test-flsin n)
(test-flcos n)
(test-fltan n)
(test-flasin n)
(test-flacos n)
(test-flatan n)
(test-fllog2 n)
(test-fllogb n)
;; Derived tests
(test-fl+/error n)
(test-fl-/error n)
(test-fl*/error n)
(test-flsqr/error n)
(test-fl//error n)
(test-fl2 n)
(test-fl2abs n)
(test-fl2+ n)
(test-fl2- n)
(test-fl2* n)
(test-fl2sqr n)
(test-fl2/ n)
(test-flsqrt/error n)
(test-fl2sqrt n)
(test-flexp/error n)
(test-fl2exp n)
(test-fl2expm1 n)
(test-fl2log n)
(test-fl2log1p n)
))