#pragma function( function1 [, function2, ...] )<\/PRE><\/TD><\/TR><\/TBODY><\/TABLE>\nintrinsic pragma\ub294 \ucef4\ud30c\uc77c\ub7ec\uc5d0 intrinsic function(function call\uc774 \uc544\ub2c8\ub77c, inline code\ucc98\ub7fc code\uc790\uccb4\ub97c \ud568\uc218 \uc0ac\uc6a9\ud558\ub294 \uc7a5\uc18c\uc5d0 \uc0bd\uc785)\uc744 \uc0dd\uc131\ud558\ub3c4\ub85d \uc9c0\uc2dc\ud55c\ub2e4. <\/P>\n function pragma\ub294 \ucef4\ud30c\uc77c\ub7ec\uc5d0\uac8c \uac15\uc81c\uc801\uc73c\ub85c function call\ud615\ud0dc\ub85c \uad6c\ud604\ub418\ub3c4\ub85d \uc9c0\uc2dc\ud55c\ub2e4.<\/P>\n function pragma \uc120\uc5b8\ud6c4 intrinsic function\uc73c\ub85c \uae30\uc220\ub41c \uccab \ud568\uc218\ubd80\ud130 \uc601\ud5a5\uc744 \ubbf8\uccd0, \uc18c\uc2a4\ucf54\ub4dc\uc758 \ub9c8\uc9c0\ub9c9\ub77c\uc778\uae4c\uc9c0 \uc601\ud5a5\uc744 \ubbf8\uce58\uac70\ub098, \ub3d9\uc77c\ud55c \ud568\uc218\uba85\uc744 intrinsic pragma\ub85c \uc9c0\uc2dc\ud55c \ub77c\uc778\uc744 \ub9cc\ub0a0\ub54c \uae4c\uc9c0 \uc601\ud5a5\uc744 \ubbf8\uce5c\ub2e4.<\/P>\n <\/P>\n <\uc0ac\uc6a9\uc608\uc2dc><\/P>\n #include <string.h>
<\/P>\n \/\/ use intrinsic forms of memset and strlen
#pragma intrinsic(memset, strlen)<\/FONT>
\/\/ Find first word break in string, and set remaining
\/\/ chars in string to specified char value.
char *set_str_after_word(char *string, char ch) {
int i;
int len = strlen(string); \/* NOTE: uses intrinsic for strlen *\/<\/FONT>
for(i = 0; i < len; i++) {
if (isspace(*(string + i)))
break;
}
for(; i < len; i++)
*(string + i) = ch;
return string;
}
\/\/ do not use strlen intrinsic
#pragma function(strlen)<\/FONT>
\/\/ Set all chars in string to specified char value.
char *set_str(char *string, char ch) {
\/\/ Uses intrinsic for memset, but calls strlen library function<\/FONT>
return (char *) memset(string, ch, strlen(string));
}
int main() {
char *str = (char *) malloc(20 * sizeof(char));
strcpy_s(str, sizeof(\"Now is the time\"), \"Now is the time\");
printf(\"str is '%s'\\n\", set_str_after_word(str, '*'));
printf(\"str is '%s'\\n\", set_str(str, '!'));
}<\/P>\n <\/P>\n 2. #pragma intrinsic<\/STRONG><\/SPAN><\/P>\n<\uc0ac\uc6a9\ubc95><\/P>\n #pragma intrinsic( function1 [, function2, ...] ) <\/P>\n <\/P>\n intrinsic pragma\ub97c \uc0ac\uc6a9\ud558\uba74, \ucef4\ud30c\uc77c\ub7ec\uac00 \ud310\ub2e8\ud558\uae30\uc5d0 inline code\ub85c \ucc98\ub9ac\ud558\ub294 \uac83\uc774 \uc88b\uc740\uba74 inline\ud654 \uc2dc\ud0a4\uace0 \uadf8\ub807\uce58 \uc54a\uc73c\uba74 function call \ud615\ud0dc\ub97c \ucde8\ud558\ub3c4\ub85d \ud55c\ub2e4.<\/P>\n intrinsic pragma\ub294 function pragma\uc640 \ud398\uc5b4\ub85c \uc0ac\uc6a9\ub420 \uc218 \uc788\uc73c\uba70, intrinsic pragma\ub85c \uc9c0\uc2dc\ub41c \ud568\uc218\ub294 \uadf8\ub2e4\uc74c\ub77c\uc778\ubd80\ud130 \uc601\ud5a5\uc744 \ubc1b\uc544\uc11c function pragma\ub85c \uc7ac \uc9c0\uc815\ub418\uae30 \uc804\uc5d0\ub294 \uc18c\uc2a4\ud30c\uc77c\uc804\uccb4\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce5c\ub2e4.<\/P>\n <\/P>\n <\uc0ac\uc6a9\uc608\uc2dc><\/P> \/\/ pragma_directive_intrinsic.cpp
\/\/ processor: x86
#include <dos.h> \/\/ definitions for _disable, _enable
#pragma intrinsic(_disable)
#pragma intrinsic(_enable)
<\/FONT>void f1(void) {
_disable();
\/\/ do some work here that should not be interrupted
_enable();
}
int main() {
}<\/PRE>3. #pragma optimize<\/SPAN><\/STRONG><\/SPAN><\/P><\uc0ac\uc6a9\ubc95><\/DIV> #pragma optimize( \"[optimization-list]\", {on | off} )<\/DIV> <\/DIV> optimize pragma\ub294 \ud568\uc218 \ubc16\uc5d0 \uc120\uc5b8\uc774 \ub418\uba70 pragma\uac00 \uc120\uc5b8\ub41c \ud6c4 \uc815\uc758\ub41c \uccab\ubc88\uc9f8 \ud568\uc218\uc5d0 \uc601\ud590\uc751\u3139 \ubbf8\uce5c\ub2e4.<\/DIV> on\/off \ud30c\ub77c\ubbf8\ud130\ub85c optimization-list\uc5d0 \uc815\uc758\ub41c \uc635\uc158\ub4e4\uc744 \uc124\uc815\/\ubbf8\uc124\uc815\ud560\uc218 \uc788\ub2e4.<\/DIV> [[optimization-list]]<\/DIV> g : Enable global optimizations. p : Improve floating-point consistency. s or t : Specify short or fast sequences of machine code. y : Generate frame pointers on the program stack. optimize pragma\uc5d0\uc11c empty string(\"\")\ub294 \ud2b9\ubcc4\ud55c \uae30\ub2a5\uc744 \ub2f4\uace0 \uc788\ub2e4.<\/DIV> -.off \ud30c\ub77c\ubbf8\ud130 \uc0ac\uc6a9\uc2dc, optimization-list\uc758 \ubaa8\ub4e0 \uc635\uc158\uc744 off\uc2dc\ud0b4<\/DIV> -.on \ud30c\ub77c\ubbf8\ud130 \uc0ac\uc6a9\uc2dc, '\/O' compiler option\uc73c\ub85c \uc124\uc815\ub41c \uc635\uc158\uc744 \uc7ac\uc124\uc815\uc2dc\ud0b4<\/DIV> <\/DIV> <\uc0ac\uc6a9\uc608\uc2dc><\/DIV> #pragma optimize( \"tp\", on )<\/FONT><\/DIV> <\/DIV> #pragma optimize( \"\", off ) . . . #pragma optimize( \"\", on )
\ucd9c\ucc98 : http:\/\/blog.naver.com\/kri7001\/30037616891
<\/SPAN><\/SPAN><\/SPAN><\/DIV><\/DIV><\/TD><\/TR><\/TBODY><\/TABLE><\/PRE>\n","protected":false},"excerpt":{"rendered":"VC++\uc5d0\uc11c #pragma \uc0ac\uc6a9\ubc95 \uc124\uba85.. MSDN\uc5d0 \ucd5c\uc801\ud654 \uad00\ub828 #pragma \uc6a9\ubc95\uc740 \uc544\ub798\uc640 \uac19\ub2e4. http:\/\/msdn.microsoft.com\/ko-kr\/library\/h7k3a0bw.aspx #pragma auto_inline #pragma check_stack #pragma function #pragma inline_depth #pragma inline_recursion #pragma intrinsic #pragma optimize \uc774\uc911\uc5d0\uc11c \uc77c\ub2e8, #pragma function #pragma intrinsic #pragma optimize \uc5d0 \ub300\ud574\uc11c \uc815\ub9ac\ud558\uace0 \ub2e4\uc74c\uac83\uc740 \ub098\uc911\uc5d0 \uc815\ub9ac\ud558\uc790. 1. #pragma function <\uc0ac\uc6a9\ubc95> #pragma function( function1 [, function2, …] ) intrinsic […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[18],"tags":[],"class_list":["post-137","post","type-post","status-publish","format-standard","hentry","category-development_language"],"_links":{"self":[{"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=137"}],"version-history":[{"count":0,"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/137\/revisions"}],"wp:attachment":[{"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} |
|