mirror of
https://github.com/jart/cosmopolitan.git
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Improve documentation
The Cosmo API documentation page is pretty good now https://justine.lol/cosmopolitan/documentation.html
This commit is contained in:
Justine Tunney
parent
13437dd19b
commit
1bc3a25505
367 changed files with 2542 additions and 26178 deletions
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@ -19,6 +19,23 @@
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/nexgen32e/bsf.h"
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/**
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* Returns position of first bit set.
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*
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* ctz(𝑥) 31^clz(𝑥) clz(𝑥)
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* uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
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* 0x00000000 wut 32 0 wut 32
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* 0x00000001 0 0 1 0 31
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* 0x80000001 0 0 1 31 0
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* 0x80000000 31 31 32 31 0
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* 0x00000010 4 4 5 4 27
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* 0x08000010 4 4 5 27 4
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* 0x08000000 27 27 28 27 4
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* 0xffffffff 0 0 1 31 0
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*
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* @param x is a 32-bit integer
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* @return number in range 0..31 or undefined if 𝑥 is 0
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*/
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int(bsf)(int x) {
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return bsf(x);
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}
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@ -19,6 +19,23 @@
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/nexgen32e/bsf.h"
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/**
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* Returns position of first bit set.
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*
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* ctz(𝑥) 31^clz(𝑥) clz(𝑥)
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* uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
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* 0x00000000 wut 32 0 wut 32
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* 0x00000001 0 0 1 0 31
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* 0x80000001 0 0 1 31 0
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* 0x80000000 31 31 32 31 0
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* 0x00000010 4 4 5 4 27
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* 0x08000010 4 4 5 27 4
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* 0x08000000 27 27 28 27 4
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* 0xffffffff 0 0 1 31 0
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*
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* @param 𝑥 is a 64-bit integer
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* @return number in range 0..63 or undefined if 𝑥 is 0
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*/
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int(bsfl)(long x) {
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return bsfl(x);
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}
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@ -19,6 +19,23 @@
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/nexgen32e/bsf.h"
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/**
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* Returns position of first bit set.
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*
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* ctz(𝑥) 31^clz(𝑥) clz(𝑥)
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* uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
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* 0x00000000 wut 32 0 wut 32
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* 0x00000001 0 0 1 0 31
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* 0x80000001 0 0 1 31 0
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* 0x80000000 31 31 32 31 0
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* 0x00000010 4 4 5 4 27
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* 0x08000010 4 4 5 27 4
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* 0x08000000 27 27 28 27 4
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* 0xffffffff 0 0 1 31 0
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*
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* @param 𝑥 is a 64-bit integer
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* @return number in range 0..63 or undefined if 𝑥 is 0
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*/
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int(bsfll)(long long x) {
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return bsfll(x);
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}
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@ -19,6 +19,23 @@
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/nexgen32e/bsr.h"
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/**
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* Returns binary logarithm of 𝑥.
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*
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* ctz(𝑥) 31^clz(𝑥) clz(𝑥)
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* uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
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* 0x00000000 wut 32 0 wut 32
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* 0x00000001 0 0 1 0 31
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* 0x80000001 0 0 1 31 0
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* 0x80000000 31 31 32 31 0
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* 0x00000010 4 4 5 4 27
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* 0x08000010 4 4 5 27 4
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* 0x08000000 27 27 28 27 4
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* 0xffffffff 0 0 1 31 0
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*
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* @param x is a 32-bit integer
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* @return number in range 0..31 or undefined if 𝑥 is 0
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*/
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int(bsr)(int x) {
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return bsr(x);
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}
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@ -19,6 +19,23 @@
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/nexgen32e/bsr.h"
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/**
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* Returns binary logarithm of 𝑥.
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*
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* ctz(𝑥) 31^clz(𝑥) clz(𝑥)
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* uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
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* 0x00000000 wut 32 0 wut 32
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* 0x00000001 0 0 1 0 31
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* 0x80000001 0 0 1 31 0
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* 0x80000000 31 31 32 31 0
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* 0x00000010 4 4 5 4 27
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* 0x08000010 4 4 5 27 4
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* 0x08000000 27 27 28 27 4
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* 0xffffffff 0 0 1 31 0
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*
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* @param x is a 64-bit integer
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* @return number in range 0..63 or undefined if 𝑥 is 0
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*/
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int(bsrl)(long x) {
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return bsrl(x);
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}
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@ -19,6 +19,23 @@
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/nexgen32e/bsr.h"
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/**
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* Returns binary logarithm of 𝑥.
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*
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* ctz(𝑥) 31^clz(𝑥) clz(𝑥)
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* uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
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* 0x00000000 wut 32 0 wut 32
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* 0x00000001 0 0 1 0 31
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* 0x80000001 0 0 1 31 0
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* 0x80000000 31 31 32 31 0
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* 0x00000010 4 4 5 4 27
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* 0x08000010 4 4 5 27 4
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* 0x08000000 27 27 28 27 4
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* 0xffffffff 0 0 1 31 0
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*
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* @param x is a 64-bit integer
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* @return number in range 0..63 or undefined if 𝑥 is 0
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*/
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int(bsrll)(long long x) {
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return bsrll(x);
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}
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@ -21,20 +21,19 @@
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/ Returns binary logarithm of integer 𝑥.
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/
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/ uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
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/ 0x00000000 wut 32 0 wut 32
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/ 0x00000001 0 0 1 0 31
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/ 0x80000001 0 0 1 31 0
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/ 0x80000000 31 31 32 31 0
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/ 0x00000010 4 4 5 4 27
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/ 0x08000010 4 4 5 27 4
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/ 0x08000000 27 27 28 27 4
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/ 0xffffffff 0 0 1 31 0
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/
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/ @param rsi:rdi is 128-bit unsigned 𝑥 value
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/ @return eax number in range [0,128) or undef if 𝑥 is 0
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/ @see also treasure trove of nearly identical functions
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/
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/ uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
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/ 0x00000000 wut 32 0 wut 32
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/ 0x00000001 0 0 1 0 31
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/ 0x80000001 0 0 1 31 0
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/ 0x80000000 31 31 32 31 0
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/ 0x00000010 4 4 5 4 27
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/ 0x08000010 4 4 5 27 4
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/ 0x08000000 27 27 28 27 4
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/ 0xffffffff 0 0 1 31 0
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/
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bsrmax: .leafprologue
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.profilable
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bsr %rsi,%rax
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@ -19,11 +19,12 @@
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/nexgen32e/crc32.h"
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extern const uint32_t kCrc32cTab[256];
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/**
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* Computes Castagnoli CRC-32 on old computers.
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*/
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uint32_t crc32c$pure(uint32_t init, const void *data, size_t size) {
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extern const uint32_t kCrc32cTab[256];
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const unsigned char *p = data;
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uint32_t h = init ^ 0xffffffff;
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unsigned i;
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@ -21,16 +21,16 @@
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/ Generates lookup table for computing CRC-32 byte-by-byte.
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/
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/ void crc32init(uint32_t table[256], uint32_t polynomial) {
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/ uint32_t d, i, r;
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/ for (d = 0; d < 256; ++d) {
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/ r = d;
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/ for (i = 0; i < 8; ++i) {
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/ r = r >> 1 ^ (r & 1 ? polynomial : 0);
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/ void crc32init(uint32_t table[256], uint32_t polynomial) {
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/ uint32_t d, i, r;
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/ for (d = 0; d < 256; ++d) {
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/ r = d;
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/ for (i = 0; i < 8; ++i) {
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/ r = r >> 1 ^ (r & 1 ? polynomial : 0);
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/ }
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/ table[d] = r;
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/ }
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/ table[d] = r;
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/ }
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/ }
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/
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/ @param rdi is pointer to uint32_t[256] array
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/ @param esi 32-bit binary polynomial config
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@ -17,7 +17,7 @@
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/bits/safemacros.internal.h"
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#include "libc/bits/safemacros.h"
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#include "libc/nexgen32e/crc32.h"
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#include "libc/nexgen32e/x86feature.h"
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/ Finds lowest set bit in word.
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/
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/ @param edi is the input number
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/ @return number in range [1,32] or 0 if no bits set
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/ @see also treasure trove of nearly identical functions
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/
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/ uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
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/ 0x00000000 wut 32 0 wut 32
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/ 0x00000001 0 0 1 0 31
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/ 0x08000000 27 27 28 27 4
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/ 0xffffffff 0 0 1 31 0
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/
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/ @param edi is the input number
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/ @return number in range [1,32] or 0 if no bits set
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/ @see also treasure trove of nearly identical functions
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/ @asyncsignalsafe
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ffs: .leafprologue
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.profilable
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@ -21,10 +21,6 @@
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/ Finds lowest set bit in word.
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/
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/ @param rdi is the input number
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/ @return number in range [1,64] or 0 if no bits set
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/ @see also treasure trove of nearly identical functions
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/
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/ uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
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/ 0x00000000 wut 32 0 wut 32
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/ 0x00000001 0 0 1 0 31
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/ 0x08000000 27 27 28 27 4
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/ 0xffffffff 0 0 1 31 0
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/
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/ @param rdi is the input number
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/ @return number in range [1,64] or 0 if no bits set
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/ @see also treasure trove of nearly identical functions
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/ @asyncsignalsafe
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ffsl: .leafprologue
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.profilable
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/ ibm cp437 unicode table w/ string literal safety
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/
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/ ▄██▀▀▄ █▄▀▄██▒▒███████████▀▀▀▄░ ░███░
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/ ▄██▀▄▄░░▀▐▄████▄ █████▀▄░░█▀▄▀░░ ▄██░
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/ █████▄▄▄███▀░█▌██▄▀▀█████▄▄░░░▄▄███▀██▄ ▄▀▀▀▄▄
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/ ▀██████▀■▄█▄▄ ░▀███████████████▓▓░░▄██▀▄████▄▄▀▄
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/
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/ █▀█ █ █▀█ █▀█ █▄▀ ▐▀█▀▌█▀█ █▀█ █▄ █ ▀█▀ █▀█ █▀▀
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/ █▀▄ █ █ █ █ █ ▀▄ █ █▀▄ █ █ █ ▀█ █ █ ▀▀█
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/ █▄█ █▄▌█▄█ █▄█ █ █ █ █ █ █▄█ █ █ ▄█▄ █▄█ █▄█
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/
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/ THERE WILL BE BLOCKS march 01 2017
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/ ░████░ ▓▀ ▄███████▀▌ ▀▄■████▀▀█▀ ██▀█
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/ ░███░ ▄▓▓▄▄░▀▀█▀█ ▌░░ ▀█▀█▀▀ ▐██▀
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/ ▀███ ▀█▄▀▄█████▀▀ ▓▓▓▄░ ▐ ░▄██
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/ ▀██ ▄███████▄████████▀░░ ░▄██
|
||||
/ ▄██▀▀▄ █▄▀▄██▒▒███████████▀▀▀▄░ ░███░
|
||||
/ ▄██▀▄▄░░▀▐▄████▄ █████▀▄░░█▀▄▀░░ ▄██░
|
||||
/ █████▄▄▄███▀░█▌██▄▀▀█████▄▄░░░▄▄███▀██▄ ▄▀▀▀▄▄
|
||||
/ ▀██████▀■▄█▄▄ ░▀███████████████▓▓░░▄██▀▄████▄▄▀▄
|
||||
/
|
||||
/ █▀█ █ █▀█ █▀█ █▄▀ ▐▀█▀▌█▀█ █▀█ █▄ █ ▀█▀ █▀█ █▀▀
|
||||
/ █▀▄ █ █ █ █ █ ▀▄ █ █▀▄ █ █ █ ▀█ █ █ ▀▀█
|
||||
/ █▄█ █▄▌█▄█ █▄█ █ █ █ █ █ █▄█ █ █ ▄█▄ █▄█ █▄█
|
||||
/
|
||||
/ THERE WILL BE BLOCKS march 01 2017
|
||||
/
|
||||
/ @see libc/str/str.h
|
||||
/ @see kCp437i[]
|
||||
|
|
|
|||
|
|
@ -20,8 +20,6 @@
|
|||
#include "libc/macros.h"
|
||||
|
||||
/ Signal mask constant w/ no signal bits set.
|
||||
/
|
||||
/ @see kSigsetFull,sigemptyset(),sigprocmask(),sigaction()
|
||||
.initbss 300,_init_kSigsetEmpty
|
||||
kSigsetEmpty:
|
||||
.rept NSIG / 64
|
||||
|
|
|
|||
|
|
@ -20,8 +20,6 @@
|
|||
#include "libc/macros.h"
|
||||
|
||||
/ Signal mask constant w/ every signal bit set.
|
||||
/
|
||||
/ @see kSigsetEmpty,sigemptyset(),sigprocmask(),sigaction()
|
||||
.initbss 300,_init_kSigsetFull
|
||||
kSigsetFull:
|
||||
.rept NSIG / 64
|
||||
|
|
|
|||
|
|
@ -20,7 +20,9 @@
|
|||
#include "libc/macros.h"
|
||||
|
||||
/ Stores CPU Timestamp Counter at startup.
|
||||
/
|
||||
/ It can be useful as an added source of seeding information.
|
||||
/
|
||||
/ @note rdtsc is a 25 cycle instruction
|
||||
.initbss 200,_init_kStartTsc
|
||||
kStartTsc:
|
||||
|
|
|
|||
|
|
@ -21,10 +21,6 @@
|
|||
|
||||
/ Finds leading bits in 𝑥.
|
||||
/
|
||||
/ @param edi is 32-bit unsigned 𝑥 value
|
||||
/ @return eax number in range [0,32) or 32 if 𝑥 is 0
|
||||
/ @see also treasure trove of nearly identical functions
|
||||
/
|
||||
/ uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
|
||||
/ 0x00000000 wut 32 0 wut 32
|
||||
/ 0x00000001 0 0 1 0 31
|
||||
|
|
@ -35,6 +31,9 @@
|
|||
/ 0x08000000 27 27 28 27 4
|
||||
/ 0xffffffff 0 0 1 31 0
|
||||
/
|
||||
/ @param edi is 32-bit unsigned 𝑥 value
|
||||
/ @return eax number in range [0,32) or 32 if 𝑥 is 0
|
||||
/ @see also treasure trove of nearly identical functions
|
||||
lzcnt: .leafprologue
|
||||
.profilable
|
||||
mov $31,%eax
|
||||
|
|
|
|||
|
|
@ -21,10 +21,6 @@
|
|||
|
||||
/ Finds leading bits in 𝑥.
|
||||
/
|
||||
/ @param rdi is 64-bit unsigned 𝑥 value
|
||||
/ @return rax number in range [0,64) or 64 if 𝑥 is 0
|
||||
/ @see also treasure trove of nearly identical functions
|
||||
/
|
||||
/ uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
|
||||
/ 0x00000000 wut 32 0 wut 32
|
||||
/ 0x00000001 0 0 1 0 31
|
||||
|
|
@ -35,6 +31,9 @@
|
|||
/ 0x08000000 27 27 28 27 4
|
||||
/ 0xffffffff 0 0 1 31 0
|
||||
/
|
||||
/ @param rdi is 64-bit unsigned 𝑥 value
|
||||
/ @return rax number in range [0,64) or 64 if 𝑥 is 0
|
||||
/ @see also treasure trove of nearly identical functions
|
||||
lzcntl: .leafprologue
|
||||
.profilable
|
||||
mov $31,%eax
|
||||
|
|
|
|||
|
|
@ -21,12 +21,7 @@
|
|||
#include "libc/nexgen32e/pcmpstr.inc"
|
||||
#include "libc/nexgen32e/strstr.inc"
|
||||
|
||||
/ Searches for substring.
|
||||
/
|
||||
/ @param rdi is NUL-terminated haystack string
|
||||
/ @param rsi is NUL-terminated needle string (16-byte aligned)
|
||||
/ @return rax is pointer to substring or NULL
|
||||
/ @asyncsignalsafe
|
||||
/ TODO(jart): Fix me.
|
||||
strstr$sse42:
|
||||
.leafprologue
|
||||
mov %rdi,%rax
|
||||
|
|
|
|||
|
|
@ -21,12 +21,7 @@
|
|||
#include "libc/nexgen32e/pcmpstr.inc"
|
||||
#include "libc/nexgen32e/strstr.inc"
|
||||
|
||||
/ Searches for substring w/ char16_t.
|
||||
/
|
||||
/ @param rdi is NUL-terminated haystack string
|
||||
/ @param rsi is NUL-terminated needle string (16-byte aligned)
|
||||
/ @return rax is pointer to substring or NULL
|
||||
/ @asyncsignalsafe
|
||||
/ TODO(jart): Fix me.
|
||||
strstr16$sse42:
|
||||
.strstr .Lequalorder16
|
||||
.endfn strstr16$sse42,globl,hidden
|
||||
|
|
|
|||
|
|
@ -22,10 +22,6 @@
|
|||
|
||||
/ Finds lowest set bit in 𝑥.
|
||||
/
|
||||
/ @param edi is 32-bit unsigned 𝑥 value
|
||||
/ @return eax number in range [0,32) or 32 if 𝑥 is 0
|
||||
/ @see also treasure trove of nearly identical functions
|
||||
/
|
||||
/ uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
|
||||
/ 0x00000000 wut 32 0 wut 32
|
||||
/ 0x00000001 0 0 1 0 31
|
||||
|
|
@ -36,6 +32,9 @@
|
|||
/ 0x08000000 27 27 28 27 4
|
||||
/ 0xffffffff 0 0 1 31 0
|
||||
/
|
||||
/ @param edi is 32-bit unsigned 𝑥 value
|
||||
/ @return eax number in range [0,32) or 32 if 𝑥 is 0
|
||||
/ @see also treasure trove of nearly identical functions
|
||||
tzcnt: .leafprologue
|
||||
.profilable
|
||||
mov $32,%esi
|
||||
|
|
|
|||
|
|
@ -21,10 +21,6 @@
|
|||
|
||||
/ Finds lowest set bit in 𝑥.
|
||||
/
|
||||
/ @param rdi is 64-bit unsigned 𝑥 value
|
||||
/ @return rax number in range [0,64) or 64 if 𝑥 is 0
|
||||
/ @see also treasure trove of nearly identical functions
|
||||
/
|
||||
/ uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
|
||||
/ 0x00000000 wut 32 0 wut 32
|
||||
/ 0x00000001 0 0 1 0 31
|
||||
|
|
@ -35,6 +31,9 @@
|
|||
/ 0x08000000 27 27 28 27 4
|
||||
/ 0xffffffff 0 0 1 31 0
|
||||
/
|
||||
/ @param rdi is 64-bit unsigned 𝑥 value
|
||||
/ @return rax number in range [0,64) or 64 if 𝑥 is 0
|
||||
/ @see also treasure trove of nearly identical functions
|
||||
tzcntl: .leafprologue
|
||||
.profilable
|
||||
mov $64,%esi
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue