//iOS开发Swift版取绝对值方法
print(abs(-12));12
print(abs(13));13
print(fabs(12.12));12
print(fabs(-12.12));12
print(fabsf(2525.151));2525
print(fabsf(-2525.151));2525转载于:https://my.oschina.net/wayzhu/blog/1556483