| # rintf.m4 | |
| # serial 5 | |
| dnl Copyright (C) 2011-2026 Free Software Foundation, Inc. | |
| dnl This file is free software; the Free Software Foundation | |
| dnl gives unlimited permission to copy and/or distribute it, | |
| dnl with or without modifications, as long as this notice is preserved. | |
| dnl This file is offered as-is, without any warranty. | |
| AC_DEFUN([gl_FUNC_RINTF], | |
| [ | |
| AC_REQUIRE([gl_MATH_H_DEFAULTS]) | |
| dnl Persuade glibc <math.h> to declare rintf(). | |
| AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) | |
| dnl Determine RINTF_LIBM. | |
| gl_MATHFUNC([rintf], [float], [(float)], | |
| [extern | |
| #ifdef __cplusplus | |
| "C" | |
| #endif | |
| float rintf (float); | |
| ]) | |
| if test $gl_cv_func_rintf_no_libm = yes \ | |
| || test $gl_cv_func_rintf_in_libm = yes; then | |
| HAVE_RINTF=1 | |
| else | |
| HAVE_RINTF=0 | |
| RINTF_LIBM= | |
| fi | |
| AC_SUBST([RINTF_LIBM]) | |
| ]) |