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implemented another batch of small floating point routiines

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FeralChild64 committed 2020-02-27 17:03:55 +01:00
1 parent 4a510d78fd
commit 6f7e099004
12 files changed
+39 -23
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c64/basic/,stubs_math/b849.add_HALF_FAC1.s
-16
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// #LAYOUT# STD * #TAKE
// #LAYOUT# X16 BASIC_0 #TAKE-OFFSET 2000
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - add 0.5 to FAC1
//
// See also:
// - [CM64] Computes Mapping the Commodore 64 - page 112
// XXX implement
add_HALF_FAC1:
STUB_IMPLEMENTATION()
c64/basic/,stubs_math/b849.interop
-4
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This is an important floating point math routine, documented in many places.
Example code utilizing this routine:
- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
c64/basic/,stubs_math/bafe.div10_FAC1_p.s
-22
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@@ -1,22 +0,0 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# X16 BASIC_0 #TAKE-OFFSET 2000
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - divide FAC1 by 10, result is always positive
//
// Notes:
// - shifts FAC1 to FAC2, loads FAC1 with the constant 10, falls through to the division routine
//
// See also:
// - [CM64] Computes Mapping the Commodore 64 - page 114
// - https://www.c64-wiki.com/wiki/Floating_point_arithmetic
// - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics
//
// XXX provide implementation
div10_FAC1_p:
STUB_IMPLEMENTATION()
c64/basic/,stubs_math/bafe.interop
-5
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@@ -1,5 +0,0 @@
This is an important floating point math routine, documented in many places.
Example code utilizing this routine:
- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
c64/basic/,stubs_math/bc2b.interop
-4
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@@ -1,4 +0,0 @@
This is an important floating point math routine, documented in many places.
Example code utilizing this routine:
- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
c64/basic/,stubs_math/bc2b.sgn_FAC1_A.s
-21
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@@ -1,21 +0,0 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# X16 BASIC_0 #TAKE-OFFSET 2000
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - evaluate FAC1 sign, to .A
//
// Output:
// - .A - 0 for FAC1 equal 0, 1 for FAC1 > 0, -1 for FAC1 < 0
//
// See also:
// - [CM64] Computes Mapping the Commodore 64 - page 115
// - https://www.c64-wiki.com/wiki/Floating_point_arithmetic
// - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics
//
// XXX provide implementation
sgn_FAC1_A:
STUB_IMPLEMENTATION()
c64/basic/,stubs_math/bf71.interop
-4
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@@ -1,4 +0,0 @@
This is an important floating point math routine, documented in many places.
Example code utilizing this routine:
- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
c64/basic/,stubs_math/bf71.sqr_FAC1.s
-21
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@@ -1,21 +0,0 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# X16 BASIC_0 #TAKE-OFFSET 2000
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - square root of FAC1
//
// Note:
// - transfers FAC1 to FAC2 and falls through to SQR2
//
// See also:
// - [CM64] Computes Mapping the Commodore 64 - page 117
// - https://www.c64-wiki.com/wiki/Floating_point_arithmetic
// - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics
//
// XXX provide implementation
sqr_FAC1:
STUB_IMPLEMENTATION()
c64/basic/,stubs_math/bf78.FPWR.s
-22
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@@ -1,22 +0,0 @@
// #LAYOUT# STD * #TAKE
// #LAYOUT# X16 BASIC_0 #TAKE-OFFSET 2000
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - set FAC1 as RAM raised to the power of FAC1
//
// Input:
// - .A - address low byte
// - .Y - address high byte
//
// See also:
// - [CM64] Computes Mapping the Commodore 64 - page 117 (FPWRT)
// - https://www.c64-wiki.com/wiki/Floating_point_arithmetic
// - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics
//
// XXX provide implementation
FPWR:
STUB_IMPLEMENTATION()
c64/basic/,stubs_math/bf78.interop
-4
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@@ -1,4 +0,0 @@
This is an important floating point math routine, documented in many places.
Example code utilizing this routine:
- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
c64/basic/,stubs_math/bf7b.FPWRT.s → c64/basic/,stubs_math/bf7b.pwr_FAC2_FAC1.s
+1 -1
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@@ -21,5 +21,5 @@
// XXX provide implementation
FPWRT:
pwr_FAC2_FAC1:
STUB_IMPLEMENTATION()