mirror of
https://github.com/jart/cosmopolitan.git
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8a91518633
Cosmopolitan's QuickJS is now equally conformant and performant, with the exception of Atomics, which have been disabled since Cosmopolitan currently doesn't support pthreads. QuickJS memory usage -- BigNum 2021-03-27 version, 64-bit, malloc limit: -1 NAME COUNT SIZE memory allocated 937 131764 (140.6 per block) memory used 938 116103 (8 overhead, 16.7 average slack) atoms 513 21408 (41.7 per atom) objects 170 12279 (72.2 per object) properties 864 15531 (5.1 per object) shapes 58 12995 (224.1 per shape) bytecode functions 13 1512 bytecode 13 867 (66.7 per function) C functions 99 arrays 1 fast arrays 1 elements 1 16 (1.0 per fast array) Result: 35/74740 errors, 1279 excluded, 485 skipped, 19 new, 2 fixed real 2m40.828s user 2m29.764s sys 0m10.939s
62 lines
2.5 KiB
ArmAsm
62 lines
2.5 KiB
ArmAsm
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
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│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/runtime/pc.internal.h"
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#include "libc/macros.internal.h"
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// Returns 𝑒^𝑥-𝟷.
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//
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// @param 𝑥 is an 80-bit long double passed on stack in 16-bytes
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// @return result of exponentiation on FPU stack in %st
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expm1l: push %rbp
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mov %rsp,%rbp
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.profilable
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fldt 16(%rbp)
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fxam
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fstsw %ax
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mov %ah,%al
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and $(FPU_C3|FPU_C2|FPU_C0)>>8,%ah
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cmp $(FPU_C3)>>8,%ah # !x
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je 0f
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cmp $(FPU_C2|FPU_C0)>>8,%ah # isinf(x)
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je 1f
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fldl2e
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fmulp %st,%st(1)
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fld %st
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frndint
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fsubr %st,%st(1)
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fld1
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fxch %st(2)
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f2xm1
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fscale
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fxch %st(2)
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fscale
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fstp %st(1)
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fld1
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fsubrp
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faddp %st,%st(1)
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0: pop %rbp
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ret
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1: test $FPU_C1>>8,%al # signbit(x)
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jz 0b
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fstp %st
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fld1
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3: fchs
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jmp 0b
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.endfn expm1l,globl
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