basis/math/floats/env/env-tests.factor

   1 USING: kernel math math.floats.env math.floats.env.private
   2 math.functions math.libm sequences tools.test locals
   3 compiler.units kernel.private fry compiler math.private words
   4 system ;
   5 IN: math.floats.env.tests
   6
   7 : set-default-fp-env ( -- )
   8     { } { } +round-nearest+ +denormal-keep+ set-fp-env ;
   9
  10 ! In case the tests screw up the FP env because of bugs in math.floats.env
  11 set-default-fp-env
  12
  13 : test-fp-exception ( exception inputs quot -- quot' )
  14     '[ _ [ @ @ ] collect-fp-exceptions nip member? ] ;
  15
  16 : test-fp-exception-compiled ( exception inputs quot -- quot' )
  17     '[ _ @ [ _ collect-fp-exceptions ] compile-call nip member? ] ;
  18
  19 [ t ] +fp-zero-divide+ [ 1.0 0.0 ] [ /f ] test-fp-exception unit-test
  20 [ t ] +fp-inexact+ [ 1.0 3.0 ] [ /f ] test-fp-exception unit-test
  21 [ t ] +fp-overflow+ [ 1.0e250 1.0e100 ] [ * ] test-fp-exception unit-test
  22 [ t ] +fp-underflow+ [ 1.0e-250 1.0e-100 ] [ * ] test-fp-exception unit-test
  23 [ t ] +fp-overflow+ [ 2.0 100,000.0 ] [ fpow ] test-fp-exception unit-test
  24 [ t ] +fp-invalid-operation+ [ 0.0 0.0 ] [ /f ] test-fp-exception unit-test
  25 [ t ] +fp-invalid-operation+ [ -1.0 ] [ fsqrt ] test-fp-exception unit-test
  26
  27 [ t ] +fp-zero-divide+ [ 1.0 0.0 ] [ /f ] test-fp-exception-compiled unit-test
  28 [ t ] +fp-inexact+ [ 1.0 3.0 ] [ /f ] test-fp-exception-compiled unit-test
  29 [ t ] +fp-overflow+ [ 1.0e250 1.0e100 ] [ * ] test-fp-exception-compiled unit-test
  30 [ t ] +fp-underflow+ [ 1.0e-250 1.0e-100 ] [ * ] test-fp-exception-compiled unit-test
  31 [ t ] +fp-overflow+ [ 2.0 100,000.0 ] [ fpow ] test-fp-exception-compiled unit-test
  32
  33 ! No underflow on Linux with this test, just inexact. Reported as an Ubuntu bug:
  34 ! https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/429113
  35 os linux? cpu x86.64? and [
  36     [ t ] +fp-underflow+ [ 2.0 -100,000.0 ] [ fpow ] test-fp-exception unit-test
  37     [ t ] +fp-underflow+ [ 2.0 -100,000.0 ] [ fpow ] test-fp-exception-compiled unit-test
  38 ] unless
  39
  40 [ t ] +fp-invalid-operation+ [ 0.0 0.0 ] [ /f ] test-fp-exception-compiled unit-test
  41 [ t ] +fp-invalid-operation+ [ -1.0 ] [ fsqrt ] test-fp-exception-compiled unit-test
  42
  43 [
  44     HEX: 3fd5,5555,5555,5555
  45     HEX: 3fc9,9999,9999,999a
  46     HEX: bfc9,9999,9999,999a
  47     HEX: bfd5,5555,5555,5555
  48 ] [
  49     +round-nearest+ [
  50          1.0 3.0 /f double>bits
  51          1.0 5.0 /f double>bits
  52         -1.0 5.0 /f double>bits
  53         -1.0 3.0 /f double>bits
  54     ] with-rounding-mode
  55 ] unit-test
  56
  57 [
  58     HEX: 3fd5,5555,5555,5555
  59     HEX: 3fc9,9999,9999,9999
  60     HEX: bfc9,9999,9999,999a
  61     HEX: bfd5,5555,5555,5556
  62 ] [
  63     +round-down+ [
  64          1.0 3.0 /f double>bits
  65          1.0 5.0 /f double>bits
  66         -1.0 5.0 /f double>bits
  67         -1.0 3.0 /f double>bits
  68     ] with-rounding-mode
  69 ] unit-test
  70
  71 [
  72     HEX: 3fd5,5555,5555,5556
  73     HEX: 3fc9,9999,9999,999a
  74     HEX: bfc9,9999,9999,9999
  75     HEX: bfd5,5555,5555,5555
  76 ] [
  77     +round-up+ [
  78          1.0 3.0 /f double>bits
  79          1.0 5.0 /f double>bits
  80         -1.0 5.0 /f double>bits
  81         -1.0 3.0 /f double>bits
  82     ] with-rounding-mode
  83 ] unit-test
  84
  85 [
  86     HEX: 3fd5,5555,5555,5555
  87     HEX: 3fc9,9999,9999,9999
  88     HEX: bfc9,9999,9999,9999
  89     HEX: bfd5,5555,5555,5555
  90 ] [
  91     +round-zero+ [
  92          1.0 3.0 /f double>bits
  93          1.0 5.0 /f double>bits
  94         -1.0 5.0 /f double>bits
  95         -1.0 3.0 /f double>bits
  96     ] with-rounding-mode
  97 ] unit-test
  98
  99 ! ensure rounding mode is restored to +round-nearest+
 100 [
 101     HEX: 3fd5,5555,5555,5555
 102     HEX: 3fc9,9999,9999,999a
 103     HEX: bfc9,9999,9999,999a
 104     HEX: bfd5,5555,5555,5555
 105 ] [
 106      1.0 3.0 /f double>bits
 107      1.0 5.0 /f double>bits
 108     -1.0 5.0 /f double>bits
 109     -1.0 3.0 /f double>bits
 110 ] unit-test
 111
 112 : test-traps ( traps inputs quot -- quot' )
 113     append '[ _ _ with-fp-traps ] ;
 114
 115 : test-traps-compiled ( traps inputs quot -- quot' )
 116     swapd '[ @ [ _ _ with-fp-traps ] compile-call ] ;
 117
 118 { +fp-zero-divide+ } [ 1.0 0.0 ] [ /f ] test-traps must-fail
 119 { +fp-inexact+ } [ 1.0 3.0 ] [ /f ] test-traps must-fail
 120 { +fp-invalid-operation+ } [ -1.0 ] [ fsqrt ] test-traps must-fail
 121 { +fp-overflow+ } [ 2.0 ] [ 100,000.0 ^ ] test-traps must-fail
 122 { +fp-underflow+ +fp-inexact+ } [ 2.0 ] [ -100,000.0 ^ ] test-traps must-fail
 123
 124 { +fp-zero-divide+ } [ 1.0 0.0 ] [ /f ] test-traps-compiled must-fail
 125 { +fp-inexact+ } [ 1.0 3.0 ] [ /f ] test-traps-compiled must-fail
 126 { +fp-invalid-operation+ } [ -1.0 ] [ fsqrt ] test-traps-compiled must-fail
 127 { +fp-overflow+ } [ 2.0 ] [ 100,000.0 ^ ] test-traps-compiled must-fail
 128 { +fp-underflow+ +fp-inexact+ } [ 2.0 ] [ -100,000.0 ^ ] test-traps-compiled must-fail
 129
 130 ! Ensure ordered comparisons raise traps
 131 :: test-comparison-quot ( word -- quot )
 132     [
 133         { float float } declare
 134         { +fp-invalid-operation+ } [ word execute ] with-fp-traps
 135     ] ;
 136
 137 : test-comparison ( inputs word -- quot )
 138     test-comparison-quot append ;
 139
 140 : test-comparison-compiled ( inputs word -- quot )
 141     test-comparison-quot '[ @ _ compile-call ] ;
 142
 143 \ float< "intrinsic" word-prop [
 144     [ 0/0. -15.0 ] \ < test-comparison must-fail
 145     [ 0/0. -15.0 ] \ < test-comparison-compiled must-fail
 146     [ -15.0 0/0. ] \ < test-comparison must-fail
 147     [ -15.0 0/0. ] \ < test-comparison-compiled must-fail
 148     [ 0/0. -15.0 ] \ <= test-comparison must-fail
 149     [ 0/0. -15.0 ] \ <= test-comparison-compiled must-fail
 150     [ -15.0 0/0. ] \ <= test-comparison must-fail
 151     [ -15.0 0/0. ] \ <= test-comparison-compiled must-fail
 152     [ 0/0. -15.0 ] \ > test-comparison must-fail
 153     [ 0/0. -15.0 ] \ > test-comparison-compiled must-fail
 154     [ -15.0 0/0. ] \ > test-comparison must-fail
 155     [ -15.0 0/0. ] \ > test-comparison-compiled must-fail
 156     [ 0/0. -15.0 ] \ >= test-comparison must-fail
 157     [ 0/0. -15.0 ] \ >= test-comparison-compiled must-fail
 158     [ -15.0 0/0. ] \ >= test-comparison must-fail
 159     [ -15.0 0/0. ] \ >= test-comparison-compiled must-fail
 160
 161     [ f ] [ 0/0. -15.0 ] \ u< test-comparison unit-test
 162     [ f ] [ 0/0. -15.0 ] \ u< test-comparison-compiled unit-test
 163     [ f ] [ -15.0 0/0. ] \ u< test-comparison unit-test
 164     [ f ] [ -15.0 0/0. ] \ u< test-comparison-compiled unit-test
 165     [ f ] [ 0/0. -15.0 ] \ u<= test-comparison unit-test
 166     [ f ] [ 0/0. -15.0 ] \ u<= test-comparison-compiled unit-test
 167     [ f ] [ -15.0 0/0. ] \ u<= test-comparison unit-test
 168     [ f ] [ -15.0 0/0. ] \ u<= test-comparison-compiled unit-test
 169     [ f ] [ 0/0. -15.0 ] \ u> test-comparison unit-test
 170     [ f ] [ 0/0. -15.0 ] \ u> test-comparison-compiled unit-test
 171     [ f ] [ -15.0 0/0. ] \ u> test-comparison unit-test
 172     [ f ] [ -15.0 0/0. ] \ u> test-comparison-compiled unit-test
 173     [ f ] [ 0/0. -15.0 ] \ u>= test-comparison unit-test
 174     [ f ] [ 0/0. -15.0 ] \ u>= test-comparison-compiled unit-test
 175     [ f ] [ -15.0 0/0. ] \ u>= test-comparison unit-test
 176     [ f ] [ -15.0 0/0. ] \ u>= test-comparison-compiled unit-test
 177 ] when
 178
 179 ! Ensure traps get cleared
 180 [ 1/0. ] [ 1.0 0.0 /f ] unit-test
 181
 182 ! Ensure state is back to normal
 183 [ +round-nearest+ ] [ rounding-mode ] unit-test
 184 [ +denormal-keep+ ] [ denormal-mode ] unit-test
 185 [ { } ] [ fp-traps ] unit-test
 186
 187 ! In case the tests screw up the FP env because of bugs in math.floats.env
 188 set-default-fp-env
 189