diff options
author | Eduardo Julian | 2018-05-07 01:37:38 -0400 |
---|---|---|
committer | Eduardo Julian | 2018-05-07 01:37:38 -0400 |
commit | febfa99c2823219c2e76d2c73b1fd8db8f6c9918 (patch) | |
tree | f521419a80b04f465c6c9c5020c2063e2e555895 /new-luxc/source/luxc/lang/translation/jvm/runtime.jvm.lux | |
parent | 3e2fddc6bfdda56dbe6947c476f85760b0811654 (diff) |
- Implemented Deg functionality in pure Lux.
Diffstat (limited to 'new-luxc/source/luxc/lang/translation/jvm/runtime.jvm.lux')
-rw-r--r-- | new-luxc/source/luxc/lang/translation/jvm/runtime.jvm.lux | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/new-luxc/source/luxc/lang/translation/jvm/runtime.jvm.lux b/new-luxc/source/luxc/lang/translation/jvm/runtime.jvm.lux index 58ed736ab..300c0c353 100644 --- a/new-luxc/source/luxc/lang/translation/jvm/runtime.jvm.lux +++ b/new-luxc/source/luxc/lang/translation/jvm/runtime.jvm.lux @@ -176,107 +176,10 @@ (|>> ($i.ALOAD +0) ($i.INVOKESTATIC "java.lang.Double" "parseDouble" ($t.method (list $String) (#.Some $t.double) (list)) false) ($i.wrap #$.Double)))) - ($d.method #$.Public $.staticM "frac_to_deg" ($t.method (list $t.double) (#.Some $t.long) (list)) - (let [swap2 (|>> $i.DUP2_X2 $i.POP2) - drop-excessI (|>> ($i.double 1.0) $i.DREM) - shiftI (|>> frac-shiftI $i.DMUL)] - (|>> ($i.DLOAD +0) - ## Get upper half - drop-excessI - shiftI - ## Make a copy, so the lower half can be extracted - $i.DUP2 - ## Get lower half - drop-excessI - shiftI - ## Turn it into a deg - $i.D2L - ## Turn the upper half into deg too - swap2 - $i.D2L - ## Combine both pieces - $i.LADD - ## FINISH - $i.LRETURN - ))) )) -(def: deg-bits Nat +64) -(def: deg-method $.Method ($t.method (list $t.long $t.long) (#.Some $t.long) (list))) (def: clz-method $.Method ($t.method (list $t.long) (#.Some $t.int) (list))) -(def: deg-methods - $.Def - (let [## "And" mask corresponding to -1 (FFFF...), on the low 32 bits. - low-half (|>> ($i.int -1) $i.I2L $i.LAND) - high-half (|>> ($i.int 32) $i.LUSHR)] - (|>> ($d.method #$.Public $.staticM "mul_deg" deg-method - ## Based on: http://stackoverflow.com/a/31629280/6823464 - (let [shift-downI (|>> ($i.int 32) $i.LUSHR) - low-leftI (|>> ($i.LLOAD +0) low-half) - high-leftI (|>> ($i.LLOAD +0) high-half) - low-rightI (|>> ($i.LLOAD +2) low-half) - high-rightI (|>> ($i.LLOAD +2) high-half) - bottomI (|>> low-leftI low-rightI $i.LMUL) - middleLI (|>> high-leftI low-rightI $i.LMUL) - middleRI (|>> low-leftI high-rightI $i.LMUL) - middleI (|>> middleLI middleRI $i.LADD) - topI (|>> high-leftI high-rightI $i.LMUL)] - (|>> bottomI shift-downI - middleI $i.LADD shift-downI - topI $i.LADD - $i.LRETURN))) - ($d.method #$.Public $.staticM "count_leading_zeros" clz-method - (let [when-zeroI (function (_ @where) (|>> ($i.long 0) $i.LCMP ($i.IFEQ @where))) - shift-rightI (function (_ amount) (|>> ($i.int amount) $i.LUSHR)) - decI (|>> ($i.int 1) $i.ISUB)] - (<| $i.with-label (function (_ @start)) - $i.with-label (function (_ @done)) - (|>> ($i.int 64) - ($i.label @start) - ($i.LLOAD +0) (when-zeroI @done) - ($i.LLOAD +0) (shift-rightI 1) ($i.LSTORE +0) - decI - ($i.GOTO @start) - ($i.label @done) - $i.IRETURN)))) - ($d.method #$.Public $.staticM "div_deg" deg-method - (<| $i.with-label (function (_ @same)) - (let [subjectI ($i.LLOAD +0) - paramI ($i.LLOAD +2) - equal?I (function (_ @where) (|>> $i.LCMP ($i.IFEQ @where))) - count-leading-zerosI ($i.INVOKESTATIC hostL.runtime-class "count_leading_zeros" clz-method false) - calc-max-shiftI (|>> subjectI count-leading-zerosI - paramI count-leading-zerosI - ($i.INVOKESTATIC "java.lang.Math" "min" ($t.method (list $t.int $t.int) (#.Some $t.int) (list)) false) - ($i.ISTORE +4)) - shiftI (|>> ($i.ILOAD +4) $i.LSHL) - imprecise-divisionI (|>> subjectI shiftI - paramI shiftI high-half - $i.LDIV) - scale-downI (|>> ($i.int 32) $i.LSHL)] - (|>> subjectI paramI - (equal?I @same) - ## Based on: http://stackoverflow.com/a/8510587/6823464 - ## Shifting the operands as much as possible can help - ## avoid some loss of precision later. - calc-max-shiftI - imprecise-divisionI - scale-downI - $i.LRETURN - ($i.label @same) - ($i.long -1) ## ~= 1.0 Degrees - $i.LRETURN)))) - ($d.method #$.Public $.staticM "deg_to_frac" ($t.method (list $t.long) (#.Some $t.double) (list)) - (let [highI (|>> ($i.LLOAD +0) high-half $i.L2D) - lowI (|>> ($i.LLOAD +0) low-half $i.L2D) - scaleI (|>> frac-shiftI $i.DDIV)] - (|>> highI scaleI - lowI scaleI scaleI - $i.DADD - $i.DRETURN))) - ))) - (def: text-methods $.Def (|>> ($d.method #$.Public $.staticM "text_clip" ($t.method (list $String $t.int $t.int) (#.Some $Variant) (list)) @@ -533,7 +436,6 @@ #let [bytecode ($d.class #$.V1_6 #$.Public $.finalC hostL.runtime-class (list) ["java.lang.Object" (list)] (list) (|>> adt-methods frac-methods - deg-methods text-methods pm-methods io-methods |