7273
A wishlist of passing tests. Let's see how the naive algorithm at http://www.ryanjuckett.com/programming/printing-floating-point-numbers does.
This commit is contained in:
Kartik Agaram
parent
3ff2e99c0b
commit
c6446c1f3d
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@ -230,8 +230,9 @@ fn print-float screen: (addr screen), n: float {
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#? }
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######## In decimal
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# Try to keep it short.
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fn test-print-float-decimal-normal {
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fn test-print-float-decimal-approximate-normal {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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@ -241,12 +242,12 @@ fn test-print-float-decimal-normal {
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var two/eax: int <- copy 2
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var two-f/xmm1: float <- convert two
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half <- divide two-f
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print-float-decimal screen, half
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print-float-decimal-approximate screen, half
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#
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check-screen-row screen, 1, "1P-1 ", "F - test-print-float-decimal-normal"
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check-screen-row screen, 1, "0.5 ", "F - test-print-float-decimal-approximate-normal"
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}
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fn test-print-float-decimal-normal-2 {
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fn test-print-float-decimal-approximate-normal-2 {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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@ -256,12 +257,12 @@ fn test-print-float-decimal-normal-2 {
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var four/eax: int <- copy 4
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var four-f/xmm1: float <- convert four
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quarter <- divide four-f
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print-float-decimal screen, quarter
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print-float-decimal-approximate screen, quarter
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#
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check-screen-row screen, 1, "1P-2 ", "F - test-print-float-decimal-normal-2"
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check-screen-row screen, 1, "0.25 ", "F - test-print-float-decimal-approximate-normal-2"
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}
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fn test-print-float-decimal-normal-3 {
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fn test-print-float-decimal-approximate-normal-3 {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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@ -271,72 +272,116 @@ fn test-print-float-decimal-normal-3 {
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var four/eax: int <- copy 4
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var four-f/xmm1: float <- convert four
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three-quarters <- divide four-f
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print-float-decimal screen, three-quarters
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print-float-decimal-approximate screen, three-quarters
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#
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check-screen-row screen, 1, "3P-2 ", "F - test-print-float-decimal-normal-3"
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check-screen-row screen, 1, "0.75 ", "F - test-print-float-decimal-approximate-normal-3"
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}
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# 3 decimal places = ok
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fn test-print-float-decimal-approximate-normal-4 {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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# print 0.125
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var one/eax: int <- copy 1
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var eighth/xmm0: float <- convert one
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var eight/eax: int <- copy 8
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var eight-f/xmm1: float <- convert eight
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eighth <- divide eight-f
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print-float-decimal-approximate screen, eighth
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#
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check-screen-row screen, 1, "0.125 ", "F - test-print-float-decimal-approximate-normal-4"
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}
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# Start truncating past 3 decimal places.
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fn test-print-float-decimal-approximate-normal-5 {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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# print 0.0625
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var one/eax: int <- copy 1
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var sixteenth/xmm0: float <- convert one
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var sixteen/eax: int <- copy 0x10
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var sixteen-f/xmm1: float <- convert sixteen
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sixteenth <- divide sixteen-f
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print-float-decimal-approximate screen, sixteenth
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#
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check-screen-row screen, 1, "0.062 ", "F - test-print-float-decimal-approximate-normal-5"
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}
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# print whole integers without decimals
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fn test-print-float-decimal-integer {
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fn test-print-float-decimal-approximate-integer {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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# print 1
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var one/eax: int <- copy 1
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var one-f/xmm0: float <- convert one
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print-float-decimal screen, one-f
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print-float-decimal-approximate screen, one-f
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#
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check-screen-row screen, 1, "1 ", "F - test-print-float-decimal-integer"
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check-screen-row screen, 1, "1 ", "F - test-print-float-decimal-approximate-integer"
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}
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fn test-print-float-decimal-integer-2 {
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fn test-print-float-decimal-approximate-integer-2 {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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# print 2
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var two/eax: int <- copy 2
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var two-f/xmm0: float <- convert two
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print-float-decimal screen, two-f
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print-float-decimal-approximate screen, two-f
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#
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check-screen-row screen, 1, "2 ", "F - test-print-float-decimal-integer-2"
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check-screen-row screen, 1, "2 ", "F - test-print-float-decimal-approximate-integer-2"
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}
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fn test-print-float-decimal-integer-3 {
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fn test-print-float-decimal-approximate-integer-3 {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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# print 10
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var ten/eax: int <- copy 0xa
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var ten-f/xmm0: float <- convert ten
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print-float-decimal screen, ten-f
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print-float-decimal-approximate screen, ten-f
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#
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check-screen-row screen, 1, "10 ", "F - test-print-float-decimal-integer-3"
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check-screen-row screen, 1, "10 ", "F - test-print-float-decimal-approximate-integer-3"
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}
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fn test-print-float-decimal-integer-4 {
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fn test-print-float-decimal-approximate-integer-4 {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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# print -10
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var minus-ten/eax: int <- copy -0xa
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var minus-ten-f/xmm0: float <- convert minus-ten
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print-float-decimal screen, minus-ten-f
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print-float-decimal-approximate screen, minus-ten-f
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#
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check-screen-row screen, 1, "-10 ", "F - test-print-float-decimal-integer-4"
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check-screen-row screen, 1, "-10 ", "F - test-print-float-decimal-approximate-integer-4"
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}
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fn test-print-float-decimal-zero {
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fn test-print-float-decimal-approximate-integer-5 {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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# print 100000
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var hundred-thousand/eax: int <- copy 0x186a0
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var hundred-thousand-f/xmm0: float <- convert hundred-thousand
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print-float-decimal-approximate screen, hundred-thousand-f
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#
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check-screen-row screen, 1, "1e5 ", "F - test-print-float-decimal-approximate-integer-5"
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}
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fn test-print-float-decimal-approximate-zero {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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# print 0
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var zero: float
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print-float-decimal screen, zero
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print-float-decimal-approximate screen, zero
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#
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check-screen-row screen, 1, "0 ", "F - test-print-float-decimal-zero"
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check-screen-row screen, 1, "0 ", "F - test-print-float-decimal-approximate-zero"
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}
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fn test-print-float-decimal-negative-zero {
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fn test-print-float-decimal-approximate-negative-zero {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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@ -344,12 +389,12 @@ fn test-print-float-decimal-negative-zero {
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var n: int
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copy-to n, 0x80000000
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var negative-zero/xmm0: float <- reinterpret n
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print-float-decimal screen, negative-zero
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print-float-decimal-approximate screen, negative-zero
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#
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check-screen-row screen, 1, "-0 ", "F - test-print-float-decimal-negative-zero"
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check-screen-row screen, 1, "-0 ", "F - test-print-float-decimal-approximate-negative-zero"
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}
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fn test-print-float-decimal-infinity {
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fn test-print-float-decimal-approximate-infinity {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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@ -359,12 +404,12 @@ fn test-print-float-decimal-infinity {
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# 0111|1111|1000|0000|0000|0000|0000|0000
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copy-to n, 0x7f800000
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var infinity/xmm0: float <- reinterpret n
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print-float-decimal screen, infinity
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print-float-decimal-approximate screen, infinity
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#
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check-screen-row screen, 1, "Inf ", "F - test-print-float-decimal-infinity"
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check-screen-row screen, 1, "Inf ", "F - test-print-float-decimal-approximate-infinity"
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}
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fn test-print-float-decimal-negative-infinity {
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fn test-print-float-decimal-approximate-negative-infinity {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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@ -372,12 +417,12 @@ fn test-print-float-decimal-negative-infinity {
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var n: int
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copy-to n, 0xff800000
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var negative-infinity/xmm0: float <- reinterpret n
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print-float-decimal screen, negative-infinity
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print-float-decimal-approximate screen, negative-infinity
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#
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check-screen-row screen, 1, "-Inf ", "F - test-print-float-decimal-negative-infinity"
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check-screen-row screen, 1, "-Inf ", "F - test-print-float-decimal-approximate-negative-infinity"
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}
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fn test-print-float-decimal-not-a-number {
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fn test-print-float-decimal-approximate-not-a-number {
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var screen-on-stack: screen
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var screen/esi: (addr screen) <- address screen-on-stack
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initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
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@ -385,12 +430,12 @@ fn test-print-float-decimal-not-a-number {
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var n: int
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copy-to n, 0xffffffff # exponent must be all 1's, and mantissa must be non-zero
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var negative-infinity/xmm0: float <- reinterpret n
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print-float-decimal screen, negative-infinity
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print-float-decimal-approximate screen, negative-infinity
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#
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check-screen-row screen, 1, "Nan ", "F - test-print-float-decimal-not-a-number"
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check-screen-row screen, 1, "Nan ", "F - test-print-float-decimal-approximate-not-a-number"
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}
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fn print-float-decimal screen: (addr screen), n: float {
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fn print-float-decimal-approximate screen: (addr screen), n: float {
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# - special names
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var bits/eax: int <- reinterpret n
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compare bits, 0
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@ -468,14 +513,14 @@ fn print-float-decimal screen: (addr screen), n: float {
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print-int32-decimal screen, result
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return
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}
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$print-float-decimal:leading-digit: {
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$print-float-decimal-approximate:leading-digit: {
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# check for subnormal numbers
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compare exponent, -0x7f
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{
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break-if-!=
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print-string screen, "0"
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exponent <- increment
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break $print-float-decimal:leading-digit
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break $print-float-decimal-approximate:leading-digit
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}
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# normal numbers
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print-string screen, "1"
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@ -499,6 +544,6 @@ fn print-float-decimal screen: (addr screen), n: float {
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#? fn main -> _/ebx: int {
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#? run-tests
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#? #? test-print-float-decimal-integer
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#? #? test-print-float-decimal-approximate-integer
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#? return 0
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#? }
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