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added several floating point constants

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FeralChild64 committed 2020-02-04 22:49:01 +01:00
1 parent 98ad2952b1
commit 2305856d63
25 files changed
+175 -11
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Makefile
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@@ -16,6 +16,7 @@ SRCDIR_BASIC = $(SRCDIR_COMMON) \
c64/basic/commands \
c64/basic/init \
c64/basic/math \
c64/basic/math_consts \
c64/basic/rom_revision
SRCDIR_KERNAL = $(SRCDIR_COMMON) \
STATUS.md
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@@ -225,6 +225,23 @@ Floating point mathematical routines - not official, but well known and broadly
<br />
In addition to the routines, the following floating-number constants are available at their original locations:
| Address | Name | Status | Remarks |
| :-------: | :-------------------- | :------: | :------------------------------------------------: |
| `$AEA8` | `const_PI` | DONE | π |
| `$B1A5` | `const_NEG_32768` | DONE | -32768 |
| `$B9BC` | `const_ONE` | DONE | 1.0 |
| `$B9D6` | `const_INV_SQR_2` | DONE | 1 / sqr(2) |
| `$B9DB` | `const_SQR_2` | DONE | sqr(2) |
| `$B9E0` | `const_NEG_HALF` | DONE | -0.5 |
| `$B9E5` | `const_LOG_2` | DONE | log_e(2) |
| `$BAF9` | `const_TEN` | DONE | 10.0 |
| `$BF11` | `const_HALF` | DONE | 0.5 |
| `$BFBF` | `const_INV_LOG_2` | DONE | 1 / log_e(2) |
| `$BFE8` | `const_ONE` duplicate | DONE | 1.0 |
### Other unofficial BASIC routines/locations
Not all of them - only these we want to have implemented.
c64/basic/math_consts/aea8.const_PI.s
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@@ -0,0 +1,13 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - a constant, for documentation see:
// - https://www.c64-wiki.com/wiki/BASIC-ROM
// - Computes Mapping the Commodore 64, page 103
//
const_PI:
put_const_PI()
c64/basic/math_consts/aea8.interop
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@@ -0,0 +1 @@
A well-known floating-point constant, has to be at the same place or we risk hard to debug improper calculation results.
c64/basic/math_consts/b1a5.const_NEG_32768.s
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@@ -0,0 +1,13 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - a constant, for documentation see:
// - https://www.c64-wiki.com/wiki/BASIC-ROM
// - Computes Mapping the Commodore 64, page 105
//
CONST_NEG_32768:
put_const_NEG_32768()
c64/basic/math_consts/b1a5.interop
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@@ -0,0 +1 @@
A well-known floating-point constant, has to be at the same place or we risk hard to debug improper calculation results.
c64/basic/math_consts/b9bc.const_ONE.s
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@@ -0,0 +1,13 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - a constant, for documentation see:
// - https://www.c64-wiki.com/wiki/BASIC-ROM
// - Computes Mapping the Commodore 64, page 113
//
const_ONE:
put_const_ONE()
c64/basic/math_consts/b9bc.interop
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@@ -0,0 +1 @@
A well-known floating-point constant, has to be at the same place or we risk hard to debug improper calculation results.
c64/basic/math_consts/b9d6.const_INV_SQR_2.s
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@@ -0,0 +1,12 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - a constant, for documentation see:
// - https://www.c64-wiki.com/wiki/BASIC-ROM
//
const_INV_SQR_2:
put_const_INV_SQR_2()
c64/basic/math_consts/b9d6.interop
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@@ -0,0 +1 @@
A well-known floating-point constant, has to be at the same place or we risk hard to debug improper calculation results.
c64/basic/math_consts/b9db.const_SQR_2.s
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@@ -0,0 +1,12 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - a constant, for documentation see:
// - https://www.c64-wiki.com/wiki/BASIC-ROM
//
const_SQR_2:
put_const_SQR_2()
c64/basic/math_consts/b9db.interop
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@@ -0,0 +1 @@
A well-known floating-point constant, has to be at the same place or we risk hard to debug improper calculation results.
c64/basic/math_consts/b9e0.const_NEG_HALF.s
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@@ -0,0 +1,12 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - a constant, for documentation see:
// - https://www.c64-wiki.com/wiki/BASIC-ROM
//
const_NEG_HALF:
put_const_NEG_HALF()
c64/basic/math_consts/b9e0.interop
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@@ -0,0 +1 @@
A well-known floating-point constant, has to be at the same place or we risk hard to debug improper calculation results.
c64/basic/math_consts/b9e5.const_LOG_2.s
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@@ -0,0 +1,12 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - a constant, for documentation see:
// - https://www.c64-wiki.com/wiki/BASIC-ROM
//
const_LOG_2:
put_const_LOG_2()
c64/basic/math_consts/b9e5.interop
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@@ -0,0 +1 @@
A well-known floating-point constant, has to be at the same place or we risk hard to debug improper calculation results.
c64/basic/math_consts/baf9.const_TEN.s
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@@ -0,0 +1,13 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - a constant, for documentation see:
// - https://www.c64-wiki.com/wiki/BASIC-ROM
// - Computes Mapping the Commodore 64, page 114
//
const_TEN:
put_const_TEN()
c64/basic/math_consts/baf9.interop
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@@ -0,0 +1 @@
A well-known floating-point constant, has to be at the same place or we risk hard to debug improper calculation results.
c64/basic/math_consts/bf11.const_HALF.s
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@@ -0,0 +1,13 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - a constant, for documentation see:
// - https://www.c64-wiki.com/wiki/BASIC-ROM
// - Computes Mapping the Commodore 64, page 116
//
const_HALF:
put_const_HALF()
c64/basic/math_consts/bf11.interop
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@@ -0,0 +1 @@
A well-known floating-point constant, has to be at the same place or we risk hard to debug improper calculation results.
c64/basic/math_consts/bfbf.const_INV_LOG_2.s
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@@ -0,0 +1,12 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - a constant, for documentation see:
// - https://www.c64-wiki.com/wiki/BASIC-ROM
//
const_INV_LOG_2:
put_const_INV_LOG_2()
c64/basic/math_consts/bfbf.interop
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@@ -0,0 +1 @@
A well-known floating-point constant, has to be at the same place or we risk hard to debug improper calculation results.
c64/basic/math_consts/bfe8.const_ONE.s
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@@ -0,0 +1,10 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - a constant, for documentation see:
// - https://www.c64-wiki.com/wiki/BASIC-ROM
//
put_const_ONE() // duplicated constant - no label
c64/basic/math_consts/bfe8.interop
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@@ -0,0 +1 @@
A well-known floating-point constant, has to be at the same place or we risk hard to debug improper calculation results.
src/generate_constants.cc
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@@ -43,17 +43,17 @@ std::vector<ConstEntry> GLOBAL_constants =
// - https://www.c64-wiki.com/wiki/BASIC-ROM
// Computes Mapping the Commodore 64, pages 103, 105, 113, 114, 116
ConstEntry( "HALF", 0.5 ),
ConstEntry( "MINUS_HALF", -0.5 ),
ConstEntry( "1", 1.0 ),
ConstEntry( "10", 10.0 ),
ConstEntry( "N32768", -32768.0 ),
ConstEntry( "HALF", 0.5 ),
ConstEntry( "NEG_HALF", -0.5 ),
ConstEntry( "ONE", 1.0 ),
ConstEntry( "TEN", 10.0 ),
ConstEntry( "NEG_32768", -32768.0 ),
ConstEntry( "PI", M_PI ),
ConstEntry( "SQR_2", std::sqrt(2.0) ),
ConstEntry( "1_OVER_SQR_2", 1.0 / std::sqrt(2.0) ),
ConstEntry( "LOG_2", std::log(2.0) ),
ConstEntry( "1_OVER_LOG_2", 1.0 / std::log(2.0) ),
ConstEntry( "PI", M_PI ),
ConstEntry( "SQR_2", std::sqrt(2.0) ),
ConstEntry( "INV_SQR_2", 1.0 / std::sqrt(2.0) ),
ConstEntry( "LOG_2", std::log(2.0) ),
ConstEntry( "INV_LOG_2", 1.0 / std::log(2.0) ),
};
//
@@ -189,7 +189,7 @@ std::string toAssemblerString(const std::string &constName, double constValue)
outFloat[4],
constValue);
std::string outDef = std::string("\n.macro putConst_") + constName + "()\n{\n\t.byte " + buf + "\n}\n";
std::string outDef = std::string("\n.macro put_const_") + constName + "()\n{\n\t.byte " + buf + "\n}\n";
return outDef;
}