kolibrios-fun/programs/develop/ktcc/trunk/libc/math/log10.asm
turbocat e08c6968ef ktcc: rollback to r9529
git-svn-id: svn://kolibrios.org@9558 a494cfbc-eb01-0410-851d-a64ba20cac60
2022-01-02 12:16:17 +00:00

19 lines
283 B
NASM

format ELF
include '../proc32.inc'
section '.text' executable
public log10_ as "log10"
log10_:
; ln(x) = lg(x)/lg(e).
fld qword[esp+4]
fld1
fxch
fyl2x ;Compute 1*lg(x).
fldl2t ;Load lg(10).
fdivp st1, st0 ;Compute lg(x)/lg(10).
ret