?? wconversion-real-integer.c
字號(hào):
/* Test for diagnostics for Wconversion between floating-point and integers. C++ equivalent of gcc/testsuite/gcc.dg/Wconversion-real-integer.c *//* { dg-do compile }/* { dg-options "-Wconversion" } */#include <limits.h>void fsi (signed int x);void fui (unsigned int x);void ffloat (float x);void fdouble (double x);float vfloat;double vdouble;void h (void){ unsigned int ui = 3; int si = 3; unsigned char uc = 3; signed char sc = 3; float f = 3; double d = 3; fsi (3.1f); /* { dg-warning "conversion" } */ si = 3.1f; /* { dg-warning "conversion" } */ fsi (3.1); /* { dg-warning "conversion" } */ si = 3.1; /* { dg-warning "conversion" } */ fsi (d); /* { dg-warning "conversion" } */ si = d; /* { dg-warning "conversion" } */ fui (-1.0); /* { dg-warning "overflow" } */ ui = -1.0; /* { dg-warning "overflow" } */ ffloat (INT_MAX); /* { dg-warning "conversion" } */ vfloat = INT_MAX; /* { dg-warning "conversion" } */ ffloat (16777217); /* { dg-warning "conversion" } */ vfloat = 16777217; /* { dg-warning "conversion" } */ ffloat (si); /* { dg-warning "conversion" } */ vfloat = si; /* { dg-warning "conversion" } */ ffloat (ui); /* { dg-warning "conversion" } */ vfloat = ui; /* { dg-warning "conversion" } */ fsi (3); si = 3; fsi (3.0f); si = 3.0f; fsi (3.0); si = 3.0; fsi (16777217.0f); si = 16777217.0f; fsi ((int) 3.1); si = (int) 3.1; ffloat (3U); vfloat = 3U; ffloat (3); vfloat = 3; ffloat (INT_MIN); vfloat = INT_MIN; ffloat (uc); vfloat = uc; ffloat (sc); vfloat = sc; fdouble (UINT_MAX); vdouble = UINT_MAX; fdouble (ui); vdouble = ui; fdouble (si); vdouble = si;}?? 快捷鍵說(shuō)明
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